On Wed, Nov 13, 2024 at 10:37 AM Han Zhou <[email protected]> wrote:

> Thanks Ales.
>
>
Hi Han,


>
> On Tue, Oct 8, 2024 at 3:12 AM Ales Musil <[email protected]> wrote:
> >
> > Commit all traffic that is not already commit by either NAT or LB. This
> > ensures that the traffic is tracked, and we don't erroneously commit
> > reply traffic, or reply traffic is not marked as invalid.
> >
> > To achieve the commit we need to perform lookup on every packet
> > that goes through LR pipeline whenever there is stateful NAT.
> >
> > The SNAT lookup requires additional flag as the unSNAT is happening
> > in ingress pipeline and at that point we need to know if the packet
> > is reply or not. This is not required for DNAT, because unDNAT stage
> > happens in egress.
>
> Could you help explain in a little more detail how the ct.rpl relates to
> this new without_unsnat flag? I still can't figure out why this flag is
> needed.
>

Without it we would commit reply traffic for SNAT which is wrong. That
caused all sorts of issues.


>
> In addition, it seems that with this flag, you commit to snat zone only if
> the packet's without_unsnat == 1, but even if the packet did perform unSNAT
> we would still want to commit it to SNAT zone, because of the HW offload
> issue reported here:
> https://mail.openvswitch.org/pipermail/ovs-dev/2024-August/417025.html
>

I'm probably missing something, why would we want to commit traffic that
did unSNAT? That traffic is already committed in the SNAT zone. The issue
described in the thread should be gone, AFAIU the problem was that the
traffic wasn't committed in the original direction, then unSNAT would mark
it as new. That shouldn't happen with this series.


>
> BTW, I have been trying my best but I feel it is quite difficult to reason
> about the correctness of the DNAT/SNAT pipelines, which have become so
> complex. I hope our test case coverage is sufficient for all kinds of
> corner cases :)
>

Yeah I understand and we probably have decent coverage because some of my
thoughts were quickly disputed by failing and misbehaving tests :)

>
> I am still working on performance test for this patch. Sorry it took so
> long but I still need some more time.
>
>
This is one of the things that we shouldn't rush, thank you for looking
into the performance testing!


>
> Regards,
> Han
>
>
Regards,
Ales


> >
> > Signed-off-by: Ales Musil <[email protected]>
> > ---
> > There is one failing system test with userspace datapath, that's due
> > to the recirculation limit that is being hit due to additional
> > lookups.
> > ---
> >  include/ovn/logical-fields.h |   4 ++
> >  lib/logical-fields.c         |   4 ++
> >  northd/northd.c              |  76 ++++++++++++----------
> >  tests/ovn-northd.at          | 118 ++++++++++++++++++++++++++---------
> >  tests/system-ovn.at          |  31 ++++++---
> >  5 files changed, 158 insertions(+), 75 deletions(-)
> >
> > diff --git a/include/ovn/logical-fields.h b/include/ovn/logical-fields.h
> > index d6c4a9b6b..cc1f50ff2 100644
> > --- a/include/ovn/logical-fields.h
> > +++ b/include/ovn/logical-fields.h
> > @@ -82,6 +82,7 @@ enum mff_log_flags_bits {
> >      MLF_LOCALNET_BIT = 15,
> >      MLF_RX_FROM_TUNNEL_BIT = 16,
> >      MLF_ICMP_SNAT_BIT = 17,
> > +    MLF_WITHOUT_UNSNAT_BIT = 18,
> >  };
> >
> >  /* MFF_LOG_FLAGS_REG flag assignments */
> > @@ -137,6 +138,9 @@ enum mff_log_flags {
> >      MLF_RX_FROM_TUNNEL = (1 << MLF_RX_FROM_TUNNEL_BIT),
> >
> >      MLF_ICMP_SNAT = (1 << MLF_ICMP_SNAT_BIT),
> > +
> > +    /* Indicate that the packet didn't go through unSNAT. */
> > +    MLF_WITHOUT_UNSNAT = (1 << MLF_WITHOUT_UNSNAT_BIT),
> >  };
> >
> >  /* OVN logical fields
> > diff --git a/lib/logical-fields.c b/lib/logical-fields.c
> > index 5a8b53f2b..c63e19897 100644
> > --- a/lib/logical-fields.c
> > +++ b/lib/logical-fields.c
> > @@ -139,6 +139,10 @@ ovn_init_symtab(struct shash *symtab)
> >                               flags_str);
> >      snprintf(flags_str, sizeof flags_str, "flags[%d]",
> MLF_RX_FROM_TUNNEL_BIT);
> >      expr_symtab_add_subfield(symtab, "flags.tunnel_rx", NULL,
> flags_str);
> > +    snprintf(flags_str, sizeof flags_str, "flags[%d]",
> > +             MLF_WITHOUT_UNSNAT_BIT);
> > +    expr_symtab_add_subfield(symtab, "flags.without_unsnat", NULL,
> > +                             flags_str);
> >
> >      /* Connection tracking state. */
> >      expr_symtab_add_field_scoped(symtab, "ct_mark", MFF_CT_MARK, NULL,
> false,
> > diff --git a/northd/northd.c b/northd/northd.c
> > index 0364dd766..a42057e45 100644
> > --- a/northd/northd.c
> > +++ b/northd/northd.c
> > @@ -15987,8 +15987,7 @@ build_lrouter_out_snat_flow(struct lflow_table
> *lflows,
> >                              struct ds *actions, bool distributed_nat,
> >                              struct eth_addr mac, int cidr_bits, bool
> is_v6,
> >                              struct ovn_port *l3dgw_port,
> > -                            struct lflow_ref *lflow_ref,
> > -                            const struct chassis_features *features)
> > +                            struct lflow_ref *lflow_ref)
> >  {
> >      if (!(nat_entry->type == SNAT || nat_entry->type == DNAT_AND_SNAT))
> {
> >          return;
> > @@ -16019,34 +16018,6 @@ build_lrouter_out_snat_flow(struct lflow_table
> *lflows,
> >                              priority, ds_cstr(match),
> >                              ds_cstr(actions), &nat->header_,
> >                              lflow_ref);
> > -
> > -    /* For the SNAT networks, we need to make sure that connections are
> > -     * properly tracked so we can decide whether to perform SNAT on
> traffic
> > -     * exiting the network. */
> > -    if (features->ct_commit_to_zone && features->ct_next_zone &&
> > -        nat_entry->type == SNAT && !od->is_gw_router) {
> > -        /* For traffic that comes from SNAT network, initiate CT state
> before
> > -         * entering S_ROUTER_OUT_SNAT to allow matching on various CT
> states.
> > -         */
> > -        ovn_lflow_add(lflows, od, S_ROUTER_OUT_POST_UNDNAT, 70,
> > -                      ds_cstr(match), "ct_next(snat);",
> > -                      lflow_ref);
> > -
> > -        build_lrouter_out_snat_match(lflows, od, nat, match,
> > -                                     distributed_nat, cidr_bits, is_v6,
> > -                                     l3dgw_port, lflow_ref, true);
> > -
> > -        /* New traffic that goes into SNAT network is committed to CT
> to avoid
> > -         * SNAT-ing replies.*/
> > -        ovn_lflow_add(lflows, od, S_ROUTER_OUT_SNAT, priority,
> > -                      ds_cstr(match), "ct_snat;",
> > -                      lflow_ref);
> > -
> > -        ds_put_cstr(match, " && ct.new");
> > -        ovn_lflow_add(lflows, od, S_ROUTER_OUT_POST_SNAT, priority,
> > -                      ds_cstr(match), "ct_commit_to_zone(snat);",
> > -                      lflow_ref);
> > -    }
> >  }
> >
> >  static void
> > @@ -16439,9 +16410,6 @@ build_lrouter_nat_defrag_and_lb(
> >          ovn_lflow_add(lflows, od, S_ROUTER_OUT_UNDNAT, 50,
> >                        "ip", "flags.loopback = 1; ct_dnat;",
> >                        lflow_ref);
> > -        ovn_lflow_add(lflows, od, S_ROUTER_OUT_POST_UNDNAT, 50,
> > -                      "ip && ct.new", "ct_commit { } ; next; ",
> > -                      lflow_ref);
> >      }
> >
> >      /* NAT rules are only valid on Gateway routers and routers with
> > @@ -16459,6 +16427,9 @@ build_lrouter_nat_defrag_and_lb(
> >          !lport_addresses_is_empty(&lrnat_rec->dnat_force_snat_addrs);
> >      bool lb_force_snat_ip =
> >          !lport_addresses_is_empty(&lrnat_rec->lb_force_snat_addrs);
> > +    bool stateful_dnat = lr_stateful_rec->has_lb_vip;
> > +    bool stateful_snat = (dnat_force_snat_ip || lb_force_snat_ip ||
> > +                          lrnat_rec->lb_force_snat_router_ip);
> >
> >      for (size_t i = 0; i < lrnat_rec->n_nat_entries; i++) {
> >          struct ovn_nat *nat_entry = &lrnat_rec->nat_entries[i];
> > @@ -16477,6 +16448,21 @@ build_lrouter_nat_defrag_and_lb(
> >              continue;
> >          }
> >
> > +        if (!stateless) {
> > +            switch (nat_entry->type) {
> > +            case DNAT:
> > +                stateful_dnat = true;
> > +                break;
> > +            case SNAT:
> > +                stateful_snat = true;
> > +                break;
> > +            case DNAT_AND_SNAT:
> > +                stateful_snat = true;
> > +                stateful_dnat = true;
> > +                break;
> > +            }
> > +        }
> > +
> >          /* S_ROUTER_IN_UNSNAT
> >           * Ingress UNSNAT table: It is for already established
> connections'
> >           * reverse traffic. i.e., SNAT has already been done in egress
> > @@ -16599,7 +16585,7 @@ build_lrouter_nat_defrag_and_lb(
> >          } else {
> >              build_lrouter_out_snat_flow(lflows, od, nat_entry, match,
> actions,
> >                                          distributed_nat, mac,
> cidr_bits, is_v6,
> > -                                        l3dgw_port, lflow_ref,
> features);
> > +                                        l3dgw_port, lflow_ref);
> >          }
> >
> >          /* S_ROUTER_IN_ADMISSION - S_ROUTER_IN_IP_INPUT */
> > @@ -16689,6 +16675,28 @@ build_lrouter_nat_defrag_and_lb(
> >          }
> >      }
> >
> > +
> > +    bool can_commit = features->ct_commit_to_zone &&
> features->ct_next_zone;
> > +    if (can_commit && stateful_dnat) {
> > +        ovn_lflow_add(lflows, od, S_ROUTER_IN_DEFRAG, 10,
> > +                      "ip && (!ct.trk || !ct.rpl)",
> > +                      "ct_next(dnat);", lflow_ref);
> > +        ovn_lflow_add(lflows, od, S_ROUTER_IN_DNAT, 10,
> > +                      "ip && ct.new", "ct_commit_to_zone(dnat);",
> lflow_ref);
> > +    }
> > +
> > +    if (can_commit && stateful_snat) {
> > +        ovn_lflow_add(lflows, od, S_ROUTER_IN_UNSNAT, 10,
> > +                      "ip", "flags.without_unsnat = 1; next;",
> lflow_ref);
> > +        ovn_lflow_add(lflows, od, S_ROUTER_OUT_POST_UNDNAT, 10,
> > +                      "ip && (!ct.trk || !ct.rpl) && "
> > +                      "flags.without_unsnat == 1", "ct_next(snat);",
> > +                      lflow_ref);
> > +        ovn_lflow_add(lflows, od, S_ROUTER_OUT_SNAT, 10,
> > +                      "ip && ct.new && flags.without_unsnat == 1",
> > +                      "ct_commit_to_zone(snat);", lflow_ref);
> > +    }
> > +
> >      if (use_common_zone && od->nbr->n_nat) {
> >          ds_clear(match);
> >          ds_put_cstr(match, "ip && ct_mark.natted == 1");
> > diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
> > index d6a8c4640..96e28a54a 100644
> > --- a/tests/ovn-northd.at
> > +++ b/tests/ovn-northd.at
> > @@ -1181,18 +1181,18 @@ AT_CAPTURE_FILE([crflows])
> >
> >  AT_CHECK([grep -e "lr_out_snat" drflows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> > -  table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.dst
> == 50.0.0.11 && inport == "DR-S1" && is_chassis_resident("cr-DR-S1") &&
> ip4.src == $allowed_range), action=(ct_snat;)
> >    table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.src
> == 50.0.0.11 && outport == "DR-S1" && is_chassis_resident("cr-DR-S1") &&
> ip4.dst == $allowed_range && (!ct.trk || !ct.rpl)),
> action=(ct_snat(172.16.1.1);)
> >  ])
> >
> >  AT_CHECK([grep -e "lr_out_post_snat" drflows | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_snat   ), priority=0    , match=(1),
> action=(next;)
> > -  table=??(lr_out_post_snat   ), priority=161  , match=(ip && ip4.dst
> == 50.0.0.11 && inport == "DR-S1" && is_chassis_resident("cr-DR-S1") &&
> ip4.src == $allowed_range && ct.new), action=(ct_commit_to_zone(snat);)
> >  ])
> >
> >  AT_CHECK([grep -e "lr_out_snat" crflows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> >    table=??(lr_out_snat        ), priority=33   , match=(ip && ip4.src
> == 50.0.0.11 && ip4.dst == $allowed_range && (!ct.trk || !ct.rpl)),
> action=(ct_snat(172.16.1.1);)
> >  ])
> > @@ -1220,19 +1220,19 @@ AT_CAPTURE_FILE([crflows2])
> >
> >  AT_CHECK([grep -e "lr_out_snat" drflows2 | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> > -  table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.dst
> == 50.0.0.11 && inport == "DR-S1" && is_chassis_resident("cr-DR-S1")),
> action=(ct_snat;)
> >    table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.src
> == 50.0.0.11 && outport == "DR-S1" && is_chassis_resident("cr-DR-S1") &&
> (!ct.trk || !ct.rpl)), action=(ct_snat(172.16.1.1);)
> >    table=??(lr_out_snat        ), priority=163  , match=(ip && ip4.src
> == 50.0.0.11 && outport == "DR-S1" && is_chassis_resident("cr-DR-S1") &&
> ip4.dst == $disallowed_range), action=(next;)
> >  ])
> >
> >  AT_CHECK([grep -e "lr_out_post_snat" drflows2 | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_snat   ), priority=0    , match=(1),
> action=(next;)
> > -  table=??(lr_out_post_snat   ), priority=161  , match=(ip && ip4.dst
> == 50.0.0.11 && inport == "DR-S1" && is_chassis_resident("cr-DR-S1") &&
> ct.new), action=(ct_commit_to_zone(snat);)
> >  ])
> >
> >  AT_CHECK([grep -e "lr_out_snat" crflows2 | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> >    table=??(lr_out_snat        ), priority=33   , match=(ip && ip4.src
> == 50.0.0.11 && (!ct.trk || !ct.rpl)), action=(ct_snat(172.16.1.1);)
> >    table=??(lr_out_snat        ), priority=35   , match=(ip && ip4.src
> == 50.0.0.11 && ip4.dst == $disallowed_range), action=(next;)
> > @@ -1259,6 +1259,7 @@ AT_CAPTURE_FILE([crflows2])
> >
> >  AT_CHECK([grep -e "lr_out_snat" drflows3 | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> >    table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.src
> == 50.0.0.11 && outport == "DR-S1" && is_chassis_resident("cr-DR-S1") &&
> ip4.dst == $allowed_range && (!ct.trk || !ct.rpl)),
> action=(ct_snat(172.16.1.2);)
> >  ])
> > @@ -1269,6 +1270,7 @@ AT_CHECK([grep -e "lr_out_post_snat" drflows3 |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep -e "lr_out_snat" crflows3 | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> >    table=??(lr_out_snat        ), priority=33   , match=(ip && ip4.src
> == 50.0.0.11 && ip4.dst == $allowed_range && (!ct.trk || !ct.rpl)),
> action=(ct_snat(172.16.1.2);)
> >  ])
> > @@ -1294,6 +1296,7 @@ AT_CAPTURE_FILE([crflows2])
> >
> >  AT_CHECK([grep -e "lr_out_snat" drflows4 | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> >    table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.src
> == 50.0.0.11 && outport == "DR-S1" && is_chassis_resident("cr-DR-S1") &&
> (!ct.trk || !ct.rpl)), action=(ct_snat(172.16.1.2);)
> >    table=??(lr_out_snat        ), priority=163  , match=(ip && ip4.src
> == 50.0.0.11 && outport == "DR-S1" && is_chassis_resident("cr-DR-S1") &&
> ip4.dst == $disallowed_range), action=(next;)
> > @@ -1301,6 +1304,7 @@ AT_CHECK([grep -e "lr_out_snat" drflows4 |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep -e "lr_out_snat" crflows4 | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> >    table=??(lr_out_snat        ), priority=33   , match=(ip && ip4.src
> == 50.0.0.11 && (!ct.trk || !ct.rpl)), action=(ct_snat(172.16.1.2);)
> >    table=??(lr_out_snat        ), priority=35   , match=(ip && ip4.src
> == 50.0.0.11 && ip4.dst == $disallowed_range), action=(next;)
> > @@ -1663,6 +1667,7 @@ AT_CAPTURE_FILE([sbflows])
> >  # dnat_and_snat or snat entry.
> >  AT_CHECK([grep "lr_in_unsnat" sbflows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_unsnat       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_unsnat       ), priority=10   , match=(ip),
> action=(flags.without_unsnat = 1; next;)
> >    table=??(lr_in_unsnat       ), priority=90   , match=(ip && ip4.dst
> == 192.168.2.1), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=90   , match=(ip && ip4.dst
> == 192.168.2.4), action=(ct_snat;)
> >  ])
> > @@ -1693,6 +1698,7 @@ AT_CAPTURE_FILE([sbflows])
> >  # dnat_and_snat or snat entry.
> >  AT_CHECK([grep "lr_in_unsnat" sbflows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_unsnat       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_unsnat       ), priority=10   , match=(ip),
> action=(flags.without_unsnat = 1; next;)
> >    table=??(lr_in_unsnat       ), priority=90   , match=(ip && ip4.dst
> == 192.168.2.1), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=90   , match=(ip && ip4.dst
> == 192.168.2.4), action=(ct_snat;)
> >  ])
> > @@ -1801,6 +1807,7 @@ ovn-nbctl --wait=sb sync
> >
> >  AT_CHECK([ovn-sbctl lflow-list lr0 | grep lr_in_unsnat |
> ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_unsnat       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_unsnat       ), priority=10   , match=(ip),
> action=(flags.without_unsnat = 1; next;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(ip4 && ip4.dst
> == 192.168.2.3), action=(ct_snat;)
> >  ])
> >
> > @@ -4277,12 +4284,14 @@ AT_CHECK([grep "lr_in_unsnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_defrag" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_defrag       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_defrag       ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl)), action=(ct_next(dnat);)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 10.0.0.10), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 10.0.0.100), action=(ct_dnat;)
> >  ])
> >
> >  AT_CHECK([grep "lr_in_dnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 10.0.0.10 && tcp && tcp.dst == 80),
> action=(ct_lb_mark(backends=10.0.0.4:8080);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 10.0.0.100 && tcp && tcp.dst == 80),
> action=(ct_lb_mark(backends=10.0.0.40:8080);)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.est &&
> !ct.rel && !ct.new && ct_mark.natted), action=(next;)
> > @@ -4302,18 +4311,21 @@ AT_CAPTURE_FILE([lr0flows])
> >
> >  AT_CHECK([grep "lr_in_unsnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_unsnat       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_unsnat       ), priority=10   , match=(ip),
> action=(flags.without_unsnat = 1; next;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(ip4 && ip4.dst
> == 20.0.0.4), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(ip6 && ip6.dst
> == aef0::4), action=(ct_snat;)
> >  ])
> >
> >  AT_CHECK([grep "lr_in_defrag" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_defrag       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_defrag       ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl)), action=(ct_next(dnat);)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 10.0.0.10), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 10.0.0.100), action=(ct_dnat;)
> >  ])
> >
> >  AT_CHECK([grep "lr_in_dnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 10.0.0.10 && tcp && tcp.dst == 80),
> action=(flags.force_snat_for_lb = 1; ct_lb_mark(backends=10.0.0.4:8080;
> force_snat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 10.0.0.100 && tcp && tcp.dst == 80),
> action=(flags.force_snat_for_lb = 1; ct_lb_mark(backends=10.0.0.40:8080;
> force_snat);)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.est &&
> !ct.rel && !ct.new && ct_mark.natted), action=(next;)
> > @@ -4326,6 +4338,7 @@ AT_CHECK([grep "lr_in_dnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_out_snat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=100  ,
> match=(flags.force_snat_for_lb == 1 && ip4), action=(ct_snat(20.0.0.4);)
> >    table=??(lr_out_snat        ), priority=100  ,
> match=(flags.force_snat_for_lb == 1 && ip6), action=(ct_snat(aef0::4);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> > @@ -4339,7 +4352,7 @@ AT_CHECK([grep "lr_out_undnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_out_post_undnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_undnat ), priority=0    , match=(1),
> action=(next;)
> > -  table=??(lr_out_post_undnat ), priority=50   , match=(ip && ct.new),
> action=(ct_commit { } ; next; )
> > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl) && flags.without_unsnat == 1), action=(ct_next(snat);)
> >  ])
> >
> >  check ovn-nbctl --wait=sb set logical_router lr0
> options:lb_force_snat_ip="router_ip"
> > @@ -4352,6 +4365,7 @@ AT_CHECK([grep "lr_in_ip_input" lr0flows | grep
> "priority=60" | sort], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_unsnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_unsnat       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_unsnat       ), priority=10   , match=(ip),
> action=(flags.without_unsnat = 1; next;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(inport ==
> "lr0-public" && ip4.dst == 172.168.0.100), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(inport ==
> "lr0-sw0" && ip4.dst == 10.0.0.1), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(inport ==
> "lr0-sw1" && ip4.dst == 20.0.0.1), action=(ct_snat;)
> > @@ -4359,12 +4373,14 @@ AT_CHECK([grep "lr_in_unsnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_defrag" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_defrag       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_defrag       ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl)), action=(ct_next(dnat);)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 10.0.0.10), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 10.0.0.100), action=(ct_dnat;)
> >  ])
> >
> >  AT_CHECK([grep "lr_in_dnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 10.0.0.10 && tcp && tcp.dst == 80),
> action=(flags.force_snat_for_lb = 1; ct_lb_mark(backends=10.0.0.4:8080;
> force_snat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 10.0.0.100 && tcp && tcp.dst == 80),
> action=(flags.force_snat_for_lb = 1; ct_lb_mark(backends=10.0.0.40:8080;
> force_snat);)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.est &&
> !ct.rel && !ct.new && ct_mark.natted), action=(next;)
> > @@ -4377,6 +4393,7 @@ AT_CHECK([grep "lr_in_dnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_out_snat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=110  ,
> match=(flags.force_snat_for_lb == 1 && ip4 && outport == "lr0-public"),
> action=(ct_snat(172.168.0.100);)
> >    table=??(lr_out_snat        ), priority=110  ,
> match=(flags.force_snat_for_lb == 1 && ip4 && outport == "lr0-sw0"),
> action=(ct_snat(10.0.0.1);)
> >    table=??(lr_out_snat        ), priority=110  ,
> match=(flags.force_snat_for_lb == 1 && ip4 && outport == "lr0-sw1"),
> action=(ct_snat(20.0.0.1);)
> > @@ -4391,7 +4408,7 @@ AT_CHECK([grep "lr_out_undnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_out_post_undnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_undnat ), priority=0    , match=(1),
> action=(next;)
> > -  table=??(lr_out_post_undnat ), priority=50   , match=(ip && ct.new),
> action=(ct_commit { } ; next; )
> > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl) && flags.without_unsnat == 1), action=(ct_next(snat);)
> >  ])
> >
> >  check ovn-nbctl --wait=sb remove logical_router lr0 options chassis
> > @@ -4416,6 +4433,7 @@ AT_CAPTURE_FILE([lr0flows])
> >
> >  AT_CHECK([grep "lr_in_unsnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_unsnat       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_unsnat       ), priority=10   , match=(ip),
> action=(flags.without_unsnat = 1; next;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(inport ==
> "lr0-public" && ip4.dst == 172.168.0.100), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(inport ==
> "lr0-sw0" && ip4.dst == 10.0.0.1), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(inport ==
> "lr0-sw1" && ip4.dst == 20.0.0.1), action=(ct_snat;)
> > @@ -4424,12 +4442,14 @@ AT_CHECK([grep "lr_in_unsnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_defrag" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_defrag       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_defrag       ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl)), action=(ct_next(dnat);)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 10.0.0.10), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 10.0.0.100), action=(ct_dnat;)
> >  ])
> >
> >  AT_CHECK([grep "lr_in_dnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 10.0.0.10 && tcp && tcp.dst == 80),
> action=(flags.force_snat_for_lb = 1; ct_lb_mark(backends=10.0.0.4:8080;
> force_snat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 10.0.0.100 && tcp && tcp.dst == 80),
> action=(flags.force_snat_for_lb = 1; ct_lb_mark(backends=10.0.0.40:8080;
> force_snat);)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.est &&
> !ct.rel && !ct.new && ct_mark.natted), action=(next;)
> > @@ -4442,6 +4462,7 @@ AT_CHECK([grep "lr_in_dnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_out_snat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=110  ,
> match=(flags.force_snat_for_lb == 1 && ip4 && outport == "lr0-public"),
> action=(ct_snat(172.168.0.100);)
> >    table=??(lr_out_snat        ), priority=110  ,
> match=(flags.force_snat_for_lb == 1 && ip4 && outport == "lr0-sw0"),
> action=(ct_snat(10.0.0.1);)
> >    table=??(lr_out_snat        ), priority=110  ,
> match=(flags.force_snat_for_lb == 1 && ip4 && outport == "lr0-sw1"),
> action=(ct_snat(20.0.0.1);)
> > @@ -4457,7 +4478,7 @@ AT_CHECK([grep "lr_out_undnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_out_post_undnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_undnat ), priority=0    , match=(1),
> action=(next;)
> > -  table=??(lr_out_post_undnat ), priority=50   , match=(ip && ct.new),
> action=(ct_commit { } ; next; )
> > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl) && flags.without_unsnat == 1), action=(ct_next(snat);)
> >  ])
> >
> >  check ovn-nbctl --wait=sb lb-add lb2 10.0.0.20:80 10.0.0.40:8080
> > @@ -4468,6 +4489,7 @@ ovn-sbctl dump-flows lr0 > lr0flows
> >
> >  AT_CHECK([grep "lr_in_unsnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_unsnat       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_unsnat       ), priority=10   , match=(ip),
> action=(flags.without_unsnat = 1; next;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(inport ==
> "lr0-public" && ip4.dst == 172.168.0.100), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(inport ==
> "lr0-sw0" && ip4.dst == 10.0.0.1), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(inport ==
> "lr0-sw1" && ip4.dst == 20.0.0.1), action=(ct_snat;)
> > @@ -4476,6 +4498,7 @@ AT_CHECK([grep "lr_in_unsnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_defrag" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_defrag       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_defrag       ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl)), action=(ct_next(dnat);)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 10.0.0.100), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 10.0.0.20), action=(ct_dnat;)
> >  ])
> > @@ -4498,7 +4521,7 @@ AT_CHECK([grep "lr_out_undnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_out_post_undnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_undnat ), priority=0    , match=(1),
> action=(next;)
> > -  table=??(lr_out_post_undnat ), priority=50   , match=(ip && ct.new),
> action=(ct_commit { } ; next; )
> > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl) && flags.without_unsnat == 1), action=(ct_next(snat);)
> >  ])
> >
> >  AT_CLEANUP
> > @@ -5744,6 +5767,7 @@ AT_CAPTURE_FILE([lr0flows])
> >
> >  AT_CHECK([grep "lr_in_unsnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_unsnat       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_unsnat       ), priority=10   , match=(ip),
> action=(flags.without_unsnat = 1; next;)
> >    table=??(lr_in_unsnat       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.10 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && flags.loopback == 0),
> action=(ct_snat_in_czone;)
> >    table=??(lr_in_unsnat       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.10 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && flags.loopback == 1 &&
> flags.use_snat_zone == 1), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.20 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && flags.loopback == 0),
> action=(ct_snat_in_czone;)
> > @@ -5754,10 +5778,12 @@ AT_CHECK([grep "lr_in_unsnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_defrag" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_defrag       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_defrag       ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl)), action=(ct_next(dnat);)
> >  ])
> >
> >  AT_CHECK([grep "lr_in_dnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.20 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_dnat_in_czone(10.0.0.3);)
> >  ])
> >
> > @@ -5776,10 +5802,12 @@ AT_CHECK([grep "lr_out_undnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_out_post_undnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_undnat ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl) && flags.without_unsnat == 1), action=(ct_next(snat);)
> >  ])
> >
> >  AT_CHECK([grep "lr_out_snat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> >    table=??(lr_out_snat        ), priority=153  , match=(ip && ip4.src
> == 10.0.0.0/24 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)),
> action=(ct_snat_in_czone(172.168.0.10);)
> >    table=??(lr_out_snat        ), priority=154  , match=(ip && ip4.src
> == 10.0.0.0/24 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl) && reg9[[4]]
> == 1), action=(reg9[[4]] = 0; ct_snat(172.168.0.10);)
> > @@ -5799,6 +5827,7 @@ AT_CAPTURE_FILE([lr0flows])
> >
> >  AT_CHECK([grep "lr_in_unsnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_unsnat       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_unsnat       ), priority=10   , match=(ip),
> action=(flags.without_unsnat = 1; next;)
> >    table=??(lr_in_unsnat       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.10 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.20 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.30 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_snat;)
> > @@ -5806,10 +5835,12 @@ AT_CHECK([grep "lr_in_unsnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_defrag" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_defrag       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_defrag       ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl)), action=(ct_next(dnat);)
> >  ])
> >
> >  AT_CHECK([grep "lr_in_dnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.20 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_dnat(10.0.0.3);)
> >  ])
> >
> > @@ -5824,24 +5855,20 @@ AT_CHECK([grep "lr_out_undnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_out_post_undnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_undnat ), priority=0    , match=(1),
> action=(next;)
> > -  table=??(lr_out_post_undnat ), priority=70   , match=(ip && ip4.src
> == 10.0.0.0/24 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)),
> action=(ct_next(snat);)
> > -  table=??(lr_out_post_undnat ), priority=70   , match=(ip && ip4.src
> == 10.0.0.10 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)),
> action=(ct_next(snat);)
> > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl) && flags.without_unsnat == 1), action=(ct_next(snat);)
> >  ])
> >
> >  AT_CHECK([grep "lr_out_snat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> > -  table=??(lr_out_snat        ), priority=153  , match=(ip && ip4.dst
> == 10.0.0.0/24 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_snat;)
> >    table=??(lr_out_snat        ), priority=153  , match=(ip && ip4.src
> == 10.0.0.0/24 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)),
> action=(ct_snat(172.168.0.10);)
> > -  table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.dst
> == 10.0.0.10 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_snat;)
> >    table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.src
> == 10.0.0.10 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)),
> action=(ct_snat(172.168.0.30);)
> >    table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.src
> == 10.0.0.3 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)),
> action=(ct_snat(172.168.0.20);)
> >  ])
> >
> >  AT_CHECK([grep "lr_out_post_snat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_snat   ), priority=0    , match=(1),
> action=(next;)
> > -  table=??(lr_out_post_snat   ), priority=153  , match=(ip && ip4.dst
> == 10.0.0.0/24 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && ct.new),
> action=(ct_commit_to_zone(snat);)
> > -  table=??(lr_out_post_snat   ), priority=161  , match=(ip && ip4.dst
> == 10.0.0.10 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && ct.new),
> action=(ct_commit_to_zone(snat);)
> >  ])
> >
> >  # Associate load balancer to lr0
> > @@ -5866,6 +5893,7 @@ AT_CAPTURE_FILE([lr0flows])
> >
> >  AT_CHECK([grep "lr_in_unsnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_unsnat       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_unsnat       ), priority=10   , match=(ip),
> action=(flags.without_unsnat = 1; next;)
> >    table=??(lr_in_unsnat       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.10 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && flags.loopback == 0),
> action=(ct_snat_in_czone;)
> >    table=??(lr_in_unsnat       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.10 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && flags.loopback == 1 &&
> flags.use_snat_zone == 1), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.20 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && flags.loopback == 0),
> action=(ct_snat_in_czone;)
> > @@ -5876,6 +5904,7 @@ AT_CHECK([grep "lr_in_unsnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_defrag" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_defrag       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_defrag       ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl)), action=(ct_next(dnat);)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 10.0.0.10), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.100), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.200), action=(ct_dnat;)
> > @@ -5884,6 +5913,7 @@ AT_CHECK([grep "lr_in_defrag" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_dnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.20 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_dnat_in_czone(10.0.0.3);)
> >    table=??(lr_in_dnat         ), priority=110  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.0.200 &&
> is_chassis_resident("cr-lr0-public")),
> action=(ct_lb_mark(backends=10.0.0.80,10.0.0.81);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 10.0.0.10 && tcp && tcp.dst == 80 &&
> is_chassis_resident("cr-lr0-public")),
> action=(ct_lb_mark(backends=10.0.0.4:8080);)
> > @@ -5916,10 +5946,12 @@ AT_CHECK([grep "lr_out_undnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_out_post_undnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_undnat ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl) && flags.without_unsnat == 1), action=(ct_next(snat);)
> >  ])
> >
> >  AT_CHECK([grep "lr_out_snat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> >    table=??(lr_out_snat        ), priority=153  , match=(ip && ip4.src
> == 10.0.0.0/24 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)),
> action=(ct_snat_in_czone(172.168.0.10);)
> >    table=??(lr_out_snat        ), priority=154  , match=(ip && ip4.src
> == 10.0.0.0/24 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl) && reg9[[4]]
> == 1), action=(reg9[[4]] = 0; ct_snat(172.168.0.10);)
> > @@ -5939,6 +5971,7 @@ AT_CAPTURE_FILE([lr0flows])
> >
> >  AT_CHECK([grep "lr_in_unsnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_unsnat       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_unsnat       ), priority=10   , match=(ip),
> action=(flags.without_unsnat = 1; next;)
> >    table=??(lr_in_unsnat       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.10 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.20 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.30 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_snat;)
> > @@ -5946,6 +5979,7 @@ AT_CHECK([grep "lr_in_unsnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_defrag" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_defrag       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_defrag       ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl)), action=(ct_next(dnat);)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 10.0.0.10), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.100), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.200), action=(ct_dnat;)
> > @@ -5954,6 +5988,7 @@ AT_CHECK([grep "lr_in_defrag" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_dnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.20 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_dnat(10.0.0.3);)
> >    table=??(lr_in_dnat         ), priority=110  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.0.200 &&
> is_chassis_resident("cr-lr0-public")),
> action=(ct_lb_mark(backends=10.0.0.80,10.0.0.81);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 10.0.0.10 && tcp && tcp.dst == 80 &&
> is_chassis_resident("cr-lr0-public")),
> action=(ct_lb_mark(backends=10.0.0.4:8080);)
> > @@ -5982,24 +6017,20 @@ AT_CHECK([grep "lr_out_undnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_out_post_undnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_undnat ), priority=0    , match=(1),
> action=(next;)
> > -  table=??(lr_out_post_undnat ), priority=70   , match=(ip && ip4.src
> == 10.0.0.0/24 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)),
> action=(ct_next(snat);)
> > -  table=??(lr_out_post_undnat ), priority=70   , match=(ip && ip4.src
> == 10.0.0.10 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)),
> action=(ct_next(snat);)
> > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl) && flags.without_unsnat == 1), action=(ct_next(snat);)
> >  ])
> >
> >  AT_CHECK([grep "lr_out_snat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> > -  table=??(lr_out_snat        ), priority=153  , match=(ip && ip4.dst
> == 10.0.0.0/24 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_snat;)
> >    table=??(lr_out_snat        ), priority=153  , match=(ip && ip4.src
> == 10.0.0.0/24 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)),
> action=(ct_snat(172.168.0.10);)
> > -  table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.dst
> == 10.0.0.10 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_snat;)
> >    table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.src
> == 10.0.0.10 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)),
> action=(ct_snat(172.168.0.30);)
> >    table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.src
> == 10.0.0.3 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && (!ct.trk || !ct.rpl)),
> action=(ct_snat(172.168.0.20);)
> >  ])
> >
> >  AT_CHECK([grep "lr_out_post_snat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_snat   ), priority=0    , match=(1),
> action=(next;)
> > -  table=??(lr_out_post_snat   ), priority=153  , match=(ip && ip4.dst
> == 10.0.0.0/24 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && ct.new),
> action=(ct_commit_to_zone(snat);)
> > -  table=??(lr_out_post_snat   ), priority=161  , match=(ip && ip4.dst
> == 10.0.0.10 && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public") && ct.new),
> action=(ct_commit_to_zone(snat);)
> >  ])
> >
> >  # Make the logical router as Gateway router
> > @@ -6013,6 +6044,7 @@ AT_CAPTURE_FILE([lr0flows])
> >
> >  AT_CHECK([grep "lr_in_unsnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_unsnat       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_unsnat       ), priority=10   , match=(ip),
> action=(flags.without_unsnat = 1; next;)
> >    table=??(lr_in_unsnat       ), priority=90   , match=(ip && ip4.dst
> == 172.168.0.10), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=90   , match=(ip && ip4.dst
> == 172.168.0.20), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=90   , match=(ip && ip4.dst
> == 172.168.0.30), action=(ct_snat;)
> > @@ -6020,6 +6052,7 @@ AT_CHECK([grep "lr_in_unsnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_defrag" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_defrag       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_defrag       ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl)), action=(ct_next(dnat);)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 10.0.0.10), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.100), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.200), action=(ct_dnat;)
> > @@ -6028,6 +6061,7 @@ AT_CHECK([grep "lr_in_defrag" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_dnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.20), action=(flags.loopback = 1; ct_dnat(10.0.0.3);)
> >    table=??(lr_in_dnat         ), priority=110  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.0.200),
> action=(ct_lb_mark(backends=10.0.0.80,10.0.0.81);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 10.0.0.10 && tcp && tcp.dst == 80),
> action=(ct_lb_mark(backends=10.0.0.4:8080);)
> > @@ -6053,11 +6087,12 @@ AT_CHECK([grep "lr_out_undnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_out_post_undnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_undnat ), priority=0    , match=(1),
> action=(next;)
> > -  table=??(lr_out_post_undnat ), priority=50   , match=(ip && ct.new),
> action=(ct_commit { } ; next; )
> > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl) && flags.without_unsnat == 1), action=(ct_next(snat);)
> >  ])
> >
> >  AT_CHECK([grep "lr_out_snat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> >    table=??(lr_out_snat        ), priority=25   , match=(ip && ip4.src
> == 10.0.0.0/24 && (!ct.trk || !ct.rpl)), action=(ct_snat(172.168.0.10);)
> >    table=??(lr_out_snat        ), priority=33   , match=(ip && ip4.src
> == 10.0.0.10 && (!ct.trk || !ct.rpl)), action=(ct_snat(172.168.0.30);)
> > @@ -6074,6 +6109,7 @@ AT_CAPTURE_FILE([lr0flows])
> >
> >  AT_CHECK([grep "lr_in_unsnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_unsnat       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_unsnat       ), priority=10   , match=(ip),
> action=(flags.without_unsnat = 1; next;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(inport ==
> "lr0-public" && ip4.dst == 172.168.0.10), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(inport ==
> "lr0-sw0" && ip4.dst == 10.0.0.1), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=90   , match=(ip && ip4.dst
> == 172.168.0.10), action=(ct_snat;)
> > @@ -6083,6 +6119,7 @@ AT_CHECK([grep "lr_in_unsnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_defrag" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_defrag       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_defrag       ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl)), action=(ct_next(dnat);)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 10.0.0.10), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.100), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.200), action=(ct_dnat;)
> > @@ -6091,6 +6128,7 @@ AT_CHECK([grep "lr_in_defrag" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_dnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.20), action=(flags.loopback = 1; ct_dnat(10.0.0.3);)
> >    table=??(lr_in_dnat         ), priority=110  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.0.200),
> action=(flags.force_snat_for_lb = 1;
> ct_lb_mark(backends=10.0.0.80,10.0.0.81; force_snat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 10.0.0.10 && tcp && tcp.dst == 80),
> action=(flags.force_snat_for_lb = 1; ct_lb_mark(backends=10.0.0.4:8080;
> force_snat);)
> > @@ -6116,11 +6154,12 @@ AT_CHECK([grep "lr_out_undnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_out_post_undnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_undnat ), priority=0    , match=(1),
> action=(next;)
> > -  table=??(lr_out_post_undnat ), priority=50   , match=(ip && ct.new),
> action=(ct_commit { } ; next; )
> > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl) && flags.without_unsnat == 1), action=(ct_next(snat);)
> >  ])
> >
> >  AT_CHECK([grep "lr_out_snat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=110  ,
> match=(flags.force_snat_for_lb == 1 && ip4 && outport == "lr0-public"),
> action=(ct_snat(172.168.0.10);)
> >    table=??(lr_out_snat        ), priority=110  ,
> match=(flags.force_snat_for_lb == 1 && ip4 && outport == "lr0-sw0"),
> action=(ct_snat(10.0.0.1);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> > @@ -6138,6 +6177,7 @@ AT_CAPTURE_FILE([lr0flows])
> >
> >  AT_CHECK([grep "lr_in_unsnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_unsnat       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_unsnat       ), priority=10   , match=(ip),
> action=(flags.without_unsnat = 1; next;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(inport ==
> "lr0-public" && ip4.dst == 172.168.0.10), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(inport ==
> "lr0-sw0" && ip4.dst == 10.0.0.1), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=90   , match=(ip && ip4.dst
> == 172.168.0.10), action=(ct_snat;)
> > @@ -6147,6 +6187,7 @@ AT_CHECK([grep "lr_in_unsnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_defrag" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_defrag       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_defrag       ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl)), action=(ct_next(dnat);)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 10.0.0.10), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.10), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.100), action=(ct_dnat;)
> > @@ -6156,6 +6197,7 @@ AT_CHECK([grep "lr_in_defrag" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_dnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.20), action=(flags.loopback = 1; ct_dnat(10.0.0.3);)
> >    table=??(lr_in_dnat         ), priority=110  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.0.200),
> action=(flags.force_snat_for_lb = 1;
> ct_lb_mark(backends=10.0.0.80,10.0.0.81; force_snat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 10.0.0.10 && tcp && tcp.dst == 80),
> action=(flags.force_snat_for_lb = 1; ct_lb_mark(backends=10.0.0.4:8080;
> force_snat);)
> > @@ -6182,11 +6224,12 @@ AT_CHECK([grep "lr_out_undnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_out_post_undnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_undnat ), priority=0    , match=(1),
> action=(next;)
> > -  table=??(lr_out_post_undnat ), priority=50   , match=(ip && ct.new),
> action=(ct_commit { } ; next; )
> > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl) && flags.without_unsnat == 1), action=(ct_next(snat);)
> >  ])
> >
> >  AT_CHECK([grep "lr_out_snat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=110  ,
> match=(flags.force_snat_for_lb == 1 && ip4 && outport == "lr0-public"),
> action=(ct_snat(172.168.0.10);)
> >    table=??(lr_out_snat        ), priority=110  ,
> match=(flags.force_snat_for_lb == 1 && ip4 && outport == "lr0-sw0"),
> action=(ct_snat(10.0.0.1);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> > @@ -6212,6 +6255,7 @@ AT_CAPTURE_FILE([lr0flows])
> >
> >  AT_CHECK([grep "lr_in_unsnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_unsnat       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_unsnat       ), priority=10   , match=(ip),
> action=(flags.without_unsnat = 1; next;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(inport ==
> "lr0-public" && ip4.dst == 172.168.0.10), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(inport ==
> "lr0-public" && ip6.dst == def0::10), action=(ct_snat;)
> >    table=??(lr_in_unsnat       ), priority=110  , match=(inport ==
> "lr0-sw0" && ip4.dst == 10.0.0.1), action=(ct_snat;)
> > @@ -6223,6 +6267,7 @@ AT_CHECK([grep "lr_in_unsnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_defrag" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_defrag       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_defrag       ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl)), action=(ct_next(dnat);)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 10.0.0.10), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.10), action=(ct_dnat;)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.100), action=(ct_dnat;)
> > @@ -6233,6 +6278,7 @@ AT_CHECK([grep "lr_in_defrag" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_in_dnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.20), action=(flags.loopback = 1; ct_dnat(10.0.0.3);)
> >    table=??(lr_in_dnat         ), priority=110  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.0.200),
> action=(flags.force_snat_for_lb = 1;
> ct_lb_mark(backends=10.0.0.80,10.0.0.81; force_snat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 10.0.0.10 && tcp && tcp.dst == 80),
> action=(flags.force_snat_for_lb = 1; ct_lb_mark(backends=10.0.0.4:8080;
> force_snat);)
> > @@ -6260,11 +6306,12 @@ AT_CHECK([grep "lr_out_undnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_out_post_undnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_undnat ), priority=0    , match=(1),
> action=(next;)
> > -  table=??(lr_out_post_undnat ), priority=50   , match=(ip && ct.new),
> action=(ct_commit { } ; next; )
> > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl) && flags.without_unsnat == 1), action=(ct_next(snat);)
> >  ])
> >
> >  AT_CHECK([grep "lr_out_snat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=110  ,
> match=(flags.force_snat_for_lb == 1 && ip4 && outport == "lr0-public"),
> action=(ct_snat(172.168.0.10);)
> >    table=??(lr_out_snat        ), priority=110  ,
> match=(flags.force_snat_for_lb == 1 && ip4 && outport == "lr0-sw0"),
> action=(ct_snat(10.0.0.1);)
> >    table=??(lr_out_snat        ), priority=110  ,
> match=(flags.force_snat_for_lb == 1 && ip6 && outport == "lr0-public"),
> action=(ct_snat(def0::10);)
> > @@ -6291,15 +6338,18 @@ AT_CAPTURE_FILE([lr0flows])
> >
> >  AT_CHECK([grep "lr_in_unsnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_unsnat       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_unsnat       ), priority=10   , match=(ip),
> action=(flags.without_unsnat = 1; next;)
> >  ])
> >
> >  AT_CHECK([grep "lr_in_defrag" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_defrag       ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_defrag       ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl)), action=(ct_next(dnat);)
> >    table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.210), action=(ct_dnat;)
> >  ])
> >
> >  AT_CHECK([grep "lr_in_dnat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.0.210 && tcp && tcp.dst == 60),
> action=(flags.force_snat_for_lb = 1; ct_lb_mark(backends=10.0.0.50:6062,
> 10.0.0.60:6062; force_snat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.0.210 && udp && udp.dst == 60),
> action=(flags.force_snat_for_lb = 1; ct_lb_mark(backends=10.0.0.50:6062,
> 10.0.0.60:6062; force_snat);)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.est &&
> !ct.rel && !ct.new && ct_mark.natted), action=(next;)
> > @@ -6322,11 +6372,12 @@ AT_CHECK([grep "lr_out_undnat" lr0flows |
> ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep "lr_out_post_undnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> >    table=??(lr_out_post_undnat ), priority=0    , match=(1),
> action=(next;)
> > -  table=??(lr_out_post_undnat ), priority=50   , match=(ip && ct.new),
> action=(ct_commit { } ; next; )
> > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip && (!ct.trk
> || !ct.rpl) && flags.without_unsnat == 1), action=(ct_next(snat);)
> >  ])
> >
> >  AT_CHECK([grep "lr_out_snat" lr0flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_snat        ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new &&
> flags.without_unsnat == 1), action=(ct_commit_to_zone(snat);)
> >    table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> >  ])
> >
> > @@ -6358,6 +6409,7 @@ check ovn-nbctl --wait=sb sync
> >
> >  AT_CHECK([ovn-sbctl dump-flows lr0 | grep "lr_in_dnat" |
> ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=110  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.10.10), action=(reg0 = 0; reject {
> outport <-> inport; next(pipeline=egress,table=??);};)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.est &&
> !ct.rel && !ct.new && ct_mark.natted), action=(next;)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.rel &&
> !ct.est && !ct.new), action=(ct_commit_nat;)
> > @@ -6372,6 +6424,7 @@ check ovn-nbctl --wait=sb set load_balancer lb5
> options:skip_snat=true
> >
> >  AT_CHECK([ovn-sbctl dump-flows lr0 | grep "lr_in_dnat" |
> ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=110  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.10.10), action=(flags.skip_snat_for_lb
> = 1; reg0 = 0; reject { outport <-> inport;
> next(pipeline=egress,table=??);};)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.est &&
> !ct.rel && !ct.new && ct_mark.natted), action=(next;)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.rel &&
> !ct.est && !ct.new), action=(ct_commit_nat;)
> > @@ -6388,6 +6441,7 @@ check ovn-nbctl --wait=sb set logical_router lr0
> options:lb_force_snat_ip="route
> >
> >  AT_CHECK([ovn-sbctl dump-flows lr0 | grep "lr_in_dnat" |
> ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=110  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.10.10),
> action=(flags.force_snat_for_lb = 1; reg0 = 0; reject { outport <-> inport;
> next(pipeline=egress,table=??);};)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.est &&
> !ct.rel && !ct.new && ct_mark.natted), action=(next;)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.rel &&
> !ct.est && !ct.new), action=(ct_commit_nat;)
> > @@ -6405,6 +6459,7 @@ check ovn-nbctl --wait=sb lr-lb-add lr0 lb6
> >
> >  AT_CHECK([ovn-sbctl dump-flows lr0 | grep "lr_in_dnat" |
> ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=110  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.10.30), action=(drop;)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.est &&
> !ct.rel && !ct.new && ct_mark.natted), action=(next;)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.rel &&
> !ct.est && !ct.new), action=(ct_commit_nat;)
> > @@ -6419,6 +6474,7 @@ check ovn-nbctl --wait=sb set load_balancer lb6
> options:skip_snat=true
> >
> >  AT_CHECK([ovn-sbctl dump-flows lr0 | grep "lr_in_dnat" |
> ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=110  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.10.30), action=(flags.skip_snat_for_lb
> = 1; drop;)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.est &&
> !ct.rel && !ct.new && ct_mark.natted), action=(next;)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.rel &&
> !ct.est && !ct.new), action=(ct_commit_nat;)
> > @@ -6435,6 +6491,7 @@ check ovn-nbctl --wait=sb set logical_router lr0
> options:lb_force_snat_ip="route
> >
> >  AT_CHECK([ovn-sbctl dump-flows lr0 | grep "lr_in_dnat" |
> ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=110  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.10.30),
> action=(flags.force_snat_for_lb = 1; drop;)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.est &&
> !ct.rel && !ct.new && ct_mark.natted), action=(next;)
> >    table=??(lr_in_dnat         ), priority=50   , match=(ct.rel &&
> !ct.est && !ct.new), action=(ct_commit_nat;)
> > @@ -7951,9 +8008,6 @@ AT_CHECK([grep lr_in_unsnat lrflows | grep ct_snat
> | ovn_strip_lflows], [0], [dn
> >  ])
> >
> >  AT_CHECK([grep lr_out_snat lrflows | grep ct_snat | ovn_strip_lflows],
> [0], [dnl
> > -  table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.dst
> == 20.0.0.10 && inport == "DR-S1" && is_chassis_resident("cr-DR-S1")),
> action=(ct_snat;)
> > -  table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.dst
> == 20.0.0.10 && inport == "DR-S2" && is_chassis_resident("cr-DR-S2")),
> action=(ct_snat;)
> > -  table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.dst
> == 20.0.0.10 && inport == "DR-S3" && is_chassis_resident("cr-DR-S3")),
> action=(ct_snat;)
> >    table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.src
> == 20.0.0.10 && outport == "DR-S1" && is_chassis_resident("cr-DR-S1") &&
> (!ct.trk || !ct.rpl)), action=(ct_snat(172.16.1.10);)
> >    table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.src
> == 20.0.0.10 && outport == "DR-S2" && is_chassis_resident("cr-DR-S2") &&
> (!ct.trk || !ct.rpl)), action=(ct_snat(10.0.0.10);)
> >    table=??(lr_out_snat        ), priority=161  , match=(ip && ip4.src
> == 20.0.0.10 && outport == "DR-S3" && is_chassis_resident("cr-DR-S3") &&
> (!ct.trk || !ct.rpl)), action=(ct_snat(192.168.0.10);)
> > @@ -7961,9 +8015,6 @@ AT_CHECK([grep lr_out_snat lrflows | grep ct_snat
> | ovn_strip_lflows], [0], [dnl
> >
> >  AT_CHECK([grep lr_out_post_snat lrflows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_out_post_snat   ), priority=0    , match=(1),
> action=(next;)
> > -  table=??(lr_out_post_snat   ), priority=161  , match=(ip && ip4.dst
> == 20.0.0.10 && inport == "DR-S1" && is_chassis_resident("cr-DR-S1") &&
> ct.new), action=(ct_commit_to_zone(snat);)
> > -  table=??(lr_out_post_snat   ), priority=161  , match=(ip && ip4.dst
> == 20.0.0.10 && inport == "DR-S2" && is_chassis_resident("cr-DR-S2") &&
> ct.new), action=(ct_commit_to_zone(snat);)
> > -  table=??(lr_out_post_snat   ), priority=161  , match=(ip && ip4.dst
> == 20.0.0.10 && inport == "DR-S3" && is_chassis_resident("cr-DR-S3") &&
> ct.new), action=(ct_commit_to_zone(snat);)
> >  ])
> >
> >  check ovn-nbctl --wait=sb lr-nat-del DR snat 20.0.0.10
> > @@ -9387,6 +9438,7 @@ AT_CHECK([grep "lr_in_lb_aff_check" R1flows |
> ovn_strip_lflows], [0], [dnl
> >  ])
> >  AT_CHECK([grep "lr_in_dnat " R1flows | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.16.0.10 && tcp && tcp.dst == 80),
> action=(ct_lb_mark(backends=10.0.0.2:80,20.0.0.2:80);)
> >    table=??(lr_in_dnat         ), priority=150  , match=(reg9[[6]] == 1
> && ct.new && ip4.dst == 172.16.0.10 && reg4 == 10.0.0.2 && reg8[[0..15]] ==
> 80), action=(reg0 = 172.16.0.10; ct_lb_mark(backends=10.0.0.2:80);)
> >    table=??(lr_in_dnat         ), priority=150  , match=(reg9[[6]] == 1
> && ct.new && ip4.dst == 172.16.0.10 && reg4 == 20.0.0.2 && reg8[[0..15]] ==
> 80), action=(reg0 = 172.16.0.10; ct_lb_mark(backends=20.0.0.2:80);)
> > @@ -9411,6 +9463,7 @@ AT_CAPTURE_FILE([R1flows_skip_snat])
> >
> >  AT_CHECK([grep "lr_in_dnat " R1flows_skip_snat | ovn_strip_lflows],
> [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.16.0.10 && tcp && tcp.dst == 80),
> action=(flags.skip_snat_for_lb = 1; ct_lb_mark(backends=10.0.0.2:80,
> 20.0.0.2:80; skip_snat);)
> >    table=??(lr_in_dnat         ), priority=150  , match=(reg9[[6]] == 1
> && ct.new && ip4.dst == 172.16.0.10 && reg4 == 10.0.0.2 && reg8[[0..15]] ==
> 80), action=(reg0 = 172.16.0.10; flags.skip_snat_for_lb = 1;
> ct_lb_mark(backends=10.0.0.2:80; skip_snat);)
> >    table=??(lr_in_dnat         ), priority=150  , match=(reg9[[6]] == 1
> && ct.new && ip4.dst == 172.16.0.10 && reg4 == 20.0.0.2 && reg8[[0..15]] ==
> 80), action=(reg0 = 172.16.0.10; flags.skip_snat_for_lb = 1;
> ct_lb_mark(backends=20.0.0.2:80; skip_snat);)
> > @@ -9432,6 +9485,7 @@ AT_CAPTURE_FILE([R1flows_force_snat])
> >
> >  AT_CHECK([grep "lr_in_dnat " R1flows_force_snat | ovn_strip_lflows],
> [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.16.0.10 && tcp && tcp.dst == 80),
> action=(flags.force_snat_for_lb = 1; ct_lb_mark(backends=10.0.0.2:80,
> 20.0.0.2:80; force_snat);)
> >    table=??(lr_in_dnat         ), priority=150  , match=(reg9[[6]] == 1
> && ct.new && ip4.dst == 172.16.0.10 && reg4 == 10.0.0.2 && reg8[[0..15]] ==
> 80), action=(reg0 = 172.16.0.10; flags.force_snat_for_lb = 1;
> ct_lb_mark(backends=10.0.0.2:80; force_snat);)
> >    table=??(lr_in_dnat         ), priority=150  , match=(reg9[[6]] == 1
> && ct.new && ip4.dst == 172.16.0.10 && reg4 == 20.0.0.2 && reg8[[0..15]] ==
> 80), action=(reg0 = 172.16.0.10; flags.force_snat_for_lb = 1;
> ct_lb_mark(backends=20.0.0.2:80; force_snat);)
> > @@ -9452,6 +9506,7 @@ AT_CAPTURE_FILE([R1flows_force_skip_snat])
> >
> >  AT_CHECK([grep "lr_in_dnat " R1flows_force_skip_snat |
> ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.16.0.10 && tcp && tcp.dst == 80),
> action=(flags.skip_snat_for_lb = 1; ct_lb_mark(backends=10.0.0.2:80,
> 20.0.0.2:80; skip_snat);)
> >    table=??(lr_in_dnat         ), priority=150  , match=(reg9[[6]] == 1
> && ct.new && ip4.dst == 172.16.0.10 && reg4 == 10.0.0.2 && reg8[[0..15]] ==
> 80), action=(reg0 = 172.16.0.10; flags.skip_snat_for_lb = 1;
> ct_lb_mark(backends=10.0.0.2:80; skip_snat);)
> >    table=??(lr_in_dnat         ), priority=150  , match=(reg9[[6]] == 1
> && ct.new && ip4.dst == 172.16.0.10 && reg4 == 20.0.0.2 && reg8[[0..15]] ==
> 80), action=(reg0 = 172.16.0.10; flags.skip_snat_for_lb = 1;
> ct_lb_mark(backends=20.0.0.2:80; skip_snat);)
> > @@ -9476,6 +9531,7 @@ AT_CAPTURE_FILE([R1flows_2lbs])
> >
> >  AT_CHECK([grep "lr_in_dnat " R1flows_2lbs | ovn_strip_lflows], [0], [dnl
> >    table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > +  table=??(lr_in_dnat         ), priority=10   , match=(ip && ct.new),
> action=(ct_commit_to_zone(dnat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.16.0.10 && tcp && tcp.dst == 80),
> action=(flags.skip_snat_for_lb = 1; ct_lb_mark(backends=10.0.0.2:80,
> 20.0.0.2:80; skip_snat);)
> >    table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.16.0.20 && tcp && tcp.dst == 80),
> action=(flags.force_snat_for_lb = 1; ct_lb_mark(backends=10.0.0.2:80,
> 20.0.0.2:80; force_snat);)
> >    table=??(lr_in_dnat         ), priority=150  , match=(reg9[[6]] == 1
> && ct.new && ip4.dst == 172.16.0.10 && reg4 == 10.0.0.2 && reg8[[0..15]] ==
> 80), action=(reg0 = 172.16.0.10; flags.skip_snat_for_lb = 1;
> ct_lb_mark(backends=10.0.0.2:80; skip_snat);)
> > diff --git a/tests/system-ovn.at b/tests/system-ovn.at
> > index 861b1cb99..dc7b0ab2e 100644
> > --- a/tests/system-ovn.at
> > +++ b/tests/system-ovn.at
> > @@ -117,6 +117,7 @@ NS_CHECK_EXEC([alice1], [ping -q -c 3 -i 0.3 -w 2
> 30.0.0.2 | FORMAT_PING], \
> >  AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(172.16.1.2) | \
> >  sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> >
>  
> icmp,orig=(src=172.16.1.2,dst=192.168.1.2,id=<cleared>,type=8,code=0),reply=(src=192.168.1.2,dst=172.16.1.2,id=<cleared>,type=0,code=0),zone=<cleared>
> >
> +icmp,orig=(src=172.16.1.2,dst=192.168.1.2,id=<cleared>,type=8,code=0),reply=(src=192.168.1.2,dst=172.16.1.2,id=<cleared>,type=0,code=0),zone=<cleared>
> >
>  
> icmp,orig=(src=172.16.1.2,dst=30.0.0.2,id=<cleared>,type=8,code=0),reply=(src=192.168.1.2,dst=172.16.1.2,id=<cleared>,type=0,code=0),zone=<cleared>
> >  ])
> >
> > @@ -297,6 +298,7 @@ NS_CHECK_EXEC([alice1], [ping6 -q -c 3 -i 0.3 -w 2
> fd30::2 | FORMAT_PING], \
> >  AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(fd21::2) | \
> >  sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> >
>  
> icmpv6,orig=(src=fd21::2,dst=fd11::2,id=<cleared>,type=128,code=0),reply=(src=fd11::2,dst=fd21::2,id=<cleared>,type=129,code=0),zone=<cleared>
> >
> +icmpv6,orig=(src=fd21::2,dst=fd11::2,id=<cleared>,type=128,code=0),reply=(src=fd11::2,dst=fd21::2,id=<cleared>,type=129,code=0),zone=<cleared>
> >
>  
> icmpv6,orig=(src=fd21::2,dst=fd30::2,id=<cleared>,type=128,code=0),reply=(src=fd11::2,dst=fd21::2,id=<cleared>,type=129,code=0),zone=<cleared>
> >  ])
> >
> > @@ -3753,6 +3755,7 @@ NS_CHECK_EXEC([foo2], [ping6 -q -c 3 -i 0.3 -w 2
> fd20::2 | FORMAT_PING], \
> >  ovs-appctl dpctl/dump-conntrack | grep icmpv6
> >  AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(fd11::3) | \
> >  sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> >
> +icmpv6,orig=(src=fd11::3,dst=fd20::2,id=<cleared>,type=128,code=0),reply=(src=fd20::2,dst=fd11::3,id=<cleared>,type=129,code=0),zone=<cleared>
> >  ])
> >
> >  # We verify that SNAT indeed happened via 'dump-conntrack' command.
> > @@ -3938,6 +3941,8 @@ NS_CHECK_EXEC([foo1], [ping -q -c 3 -i 0.3 -w 2
> 192.168.2.2 | FORMAT_PING], \
> >  # We verify that the connection is not tracked.
> >  AT_CHECK([ovs-appctl dpctl/dump-conntrack | grep icmp |
> FORMAT_CT(192.168.2.2) | \
> >  sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> >
> +icmp,orig=(src=192.168.1.2,dst=192.168.2.2,id=<cleared>,type=8,code=0),reply=(src=192.168.2.2,dst=192.168.1.2,id=<cleared>,type=0,code=0),zone=<cleared>
> >
> +icmp,orig=(src=192.168.1.2,dst=192.168.2.2,id=<cleared>,type=8,code=0),reply=(src=192.168.2.2,dst=192.168.1.2,id=<cleared>,type=0,code=0),zone=<cleared>
> >  ])
> >
> >  AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > @@ -3950,6 +3955,8 @@ NS_CHECK_EXEC([foo2], [ping -q -c 3 -i 0.3 -w 2
> 192.168.2.2 | FORMAT_PING], \
> >  # We verify that the connection is not tracked.
> >  AT_CHECK([ovs-appctl dpctl/dump-conntrack | grep icmp |
> FORMAT_CT(192.168.2.2) | \
> >  sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> >
> +icmp,orig=(src=192.168.1.3,dst=192.168.2.2,id=<cleared>,type=8,code=0),reply=(src=192.168.2.2,dst=192.168.1.3,id=<cleared>,type=0,code=0),zone=<cleared>
> >
> +icmp,orig=(src=192.168.1.3,dst=192.168.2.2,id=<cleared>,type=8,code=0),reply=(src=192.168.2.2,dst=192.168.1.3,id=<cleared>,type=0,code=0),zone=<cleared>
> >  ])
> >
> >  AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > @@ -3959,9 +3966,11 @@ NS_CHECK_EXEC([bar1], [ping -q -c 3 -i 0.3 -w 2
> 192.168.1.3 | FORMAT_PING], \
> >  3 packets transmitted, 3 received, 0% packet loss, time 0ms
> >  ])
> >
> > -# We verify that the connection is not tracked.
> > +# We verify that the connection is tracked.
> >  AT_CHECK([ovs-appctl dpctl/dump-conntrack | grep icmp |
> FORMAT_CT(192.168.2.2) | \
> >  sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> >
> +icmp,orig=(src=192.168.2.2,dst=192.168.1.3,id=<cleared>,type=8,code=0),reply=(src=192.168.1.3,dst=192.168.2.2,id=<cleared>,type=0,code=0),zone=<cleared>
> >
> +icmp,orig=(src=192.168.2.2,dst=192.168.1.3,id=<cleared>,type=8,code=0),reply=(src=192.168.1.3,dst=192.168.2.2,id=<cleared>,type=0,code=0),zone=<cleared>
> >  ])
> >
> >  AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > @@ -3978,6 +3987,7 @@ AT_CHECK([ovs-appctl dpctl/dump-conntrack | grep
> icmp | FORMAT_CT(172.16.1.4) |
> >  sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> >
>  
> icmp,orig=(src=172.16.1.3,dst=172.16.1.4,id=<cleared>,type=8,code=0),reply=(src=192.168.2.2,dst=172.16.1.3,id=<cleared>,type=0,code=0),zone=<cleared>
> >
>  
> icmp,orig=(src=192.168.1.2,dst=172.16.1.4,id=<cleared>,type=8,code=0),reply=(src=172.16.1.4,dst=172.16.1.3,id=<cleared>,type=0,code=0),zone=<cleared>
> >
> +icmp,orig=(src=192.168.1.2,dst=172.16.1.4,id=<cleared>,type=8,code=0),reply=(src=172.16.1.4,dst=192.168.1.2,id=<cleared>,type=0,code=0),zone=<cleared>
> >  ])
> >
> >  AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > @@ -3993,7 +4003,6 @@ NS_CHECK_EXEC([foo2], [ping -q -c 3 -i 0.3 -w 2
> 172.16.1.4 | FORMAT_PING], \
> >  AT_CHECK([ovs-appctl dpctl/dump-conntrack | grep icmp |
> FORMAT_CT(172.16.1.1) | \
> >  sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> >
>  
> icmp,orig=(src=172.16.1.1,dst=172.16.1.4,id=<cleared>,type=8,code=0),reply=(src=192.168.2.2,dst=172.16.1.1,id=<cleared>,type=0,code=0),zone=<cleared>
> >
> -icmp,orig=(src=172.16.1.1,dst=192.168.2.2,id=<cleared>,type=8,code=0),reply=(src=192.168.2.2,dst=172.16.1.1,id=<cleared>,type=0,code=0),zone=<cleared>
> >
>  
> icmp,orig=(src=192.168.1.3,dst=172.16.1.4,id=<cleared>,type=8,code=0),reply=(src=172.16.1.4,dst=172.16.1.1,id=<cleared>,type=0,code=0),zone=<cleared>
> >  ])
> >
> > @@ -4144,6 +4153,7 @@ NS_CHECK_EXEC([foo1], [ping -q -c 3 -i 0.3 -w 2
> fd20::4 | FORMAT_PING], \
> >  # Then DNAT of 'bar1' address happens (listed first below).
> >  AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(fd20::4) | \
> >  sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> >
> +icmpv6,orig=(src=fd11::2,dst=fd20::4,id=<cleared>,type=128,code=0),reply=(src=fd20::4,dst=fd11::2,id=<cleared>,type=129,code=0),zone=<cleared>
> >
>  
> icmpv6,orig=(src=fd11::2,dst=fd20::4,id=<cleared>,type=128,code=0),reply=(src=fd20::4,dst=fd20::3,id=<cleared>,type=129,code=0),zone=<cleared>
> >
>  
> icmpv6,orig=(src=fd20::3,dst=fd20::4,id=<cleared>,type=128,code=0),reply=(src=fd12::2,dst=fd20::3,id=<cleared>,type=129,code=0),zone=<cleared>
> >  ])
> > @@ -4161,7 +4171,6 @@ NS_CHECK_EXEC([foo2], [ping -q -c 3 -i 0.3 -w 2
> fd20::4 | FORMAT_PING], \
> >  AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(fd20::1) | \
> >  sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> >
>  
> icmpv6,orig=(src=fd11::3,dst=fd20::4,id=<cleared>,type=128,code=0),reply=(src=fd20::4,dst=fd20::1,id=<cleared>,type=129,code=0),zone=<cleared>
> >
> -icmpv6,orig=(src=fd20::1,dst=fd12::2,id=<cleared>,type=128,code=0),reply=(src=fd12::2,dst=fd20::1,id=<cleared>,type=129,code=0),zone=<cleared>
> >
>  
> icmpv6,orig=(src=fd20::1,dst=fd20::4,id=<cleared>,type=128,code=0),reply=(src=fd12::2,dst=fd20::1,id=<cleared>,type=129,code=0),zone=<cleared>
> >  ])
> >
> > @@ -8682,10 +8691,10 @@ test_ping sw11 192.168.1.2
> >  OVS_WAIT_UNTIL([ovs-ofctl dump-flows br-int | grep -v "n_packets=0" |
> grep 'nat(src=172.16.1.21)'])
> >  # Ensure conntrack entry is present
> >  OVS_WAIT_FOR_OUTPUT([
> > -    ovs-appctl dpctl/dump-conntrack | FORMAT_CT(192.168.2.2) | \
> > +    ovs-appctl dpctl/dump-conntrack | FORMAT_CT(192.168.1.2) | \
> >        sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> >
> -icmp,orig=(src=192.168.2.2,dst=192.168.1.2,id=<cleared>,type=8,code=0),reply=(src=192.168.1.2,dst=192.168.2.2,id=<cleared>,type=0,code=0),zone=<cleared>
> >
> -tcp,orig=(src=192.168.2.2,dst=192.168.1.2,sport=<cleared>,dport=<cleared>),reply=(src=192.168.1.2,dst=192.168.2.2,sport=<cleared>,dport=<cleared>),zone=<cleared>,protoinfo=(state=<cleared>)
> >
> +icmp,orig=(src=192.168.2.2,dst=192.168.1.2,id=<cleared>,type=8,code=0),reply=(src=192.168.1.2,dst=172.16.1.21,id=<cleared>,type=0,code=0),zone=<cleared>
> >
> +tcp,orig=(src=192.168.2.2,dst=192.168.1.2,sport=<cleared>,dport=<cleared>),reply=(src=192.168.1.2,dst=172.16.1.21,sport=<cleared>,dport=<cleared>),zone=<cleared>,protoinfo=(state=<cleared>)
> >  ])
> >
> >  AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > @@ -8697,9 +8706,11 @@ test_ping sw11 192.168.1.2
> >
> >  # Ensure conntrack entry is present
> >  OVS_WAIT_FOR_OUTPUT([
> > -    ovs-appctl dpctl/dump-conntrack | FORMAT_CT(192.168.2.2) | \
> > +    ovs-appctl dpctl/dump-conntrack | FORMAT_CT(192.168.1.2) | \
> >        sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> >
> +icmp,orig=(src=192.168.2.2,dst=192.168.1.2,id=<cleared>,type=8,code=0),reply=(src=192.168.1.2,dst=172.16.1.21,id=<cleared>,type=0,code=0),zone=<cleared>
> >
>  
> icmp,orig=(src=192.168.2.2,dst=192.168.1.2,id=<cleared>,type=8,code=0),reply=(src=192.168.1.2,dst=192.168.2.2,id=<cleared>,type=0,code=0),zone=<cleared>
> >
> +tcp,orig=(src=192.168.2.2,dst=192.168.1.2,sport=<cleared>,dport=<cleared>),reply=(src=192.168.1.2,dst=172.16.1.21,sport=<cleared>,dport=<cleared>),zone=<cleared>,protoinfo=(state=<cleared>)
> >
>  
> tcp,orig=(src=192.168.2.2,dst=192.168.1.2,sport=<cleared>,dport=<cleared>),reply=(src=192.168.1.2,dst=192.168.2.2,sport=<cleared>,dport=<cleared>),zone=<cleared>,protoinfo=(state=<cleared>)
> >  ])
> >
> > @@ -8711,10 +8722,10 @@ test_ping sw11 172.16.1.2
> >
> >  # Ensure conntrack entry is present
> >  OVS_WAIT_FOR_OUTPUT([
> > -    ovs-appctl dpctl/dump-conntrack | FORMAT_CT(192.168.2.2) | \
> > +    ovs-appctl dpctl/dump-conntrack | FORMAT_CT(192.168.1.2) | \
> >        sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> >
> -icmp,orig=(src=192.168.2.2,dst=172.16.1.2,id=<cleared>,type=8,code=0),reply=(src=192.168.1.2,dst=192.168.2.2,id=<cleared>,type=0,code=0),zone=<cleared>
> >
> -tcp,orig=(src=192.168.2.2,dst=172.16.1.2,sport=<cleared>,dport=<cleared>),reply=(src=192.168.1.2,dst=192.168.2.2,sport=<cleared>,dport=<cleared>),zone=<cleared>,protoinfo=(state=<cleared>)
> >
> +icmp,orig=(src=192.168.2.2,dst=192.168.1.2,id=<cleared>,type=8,code=0),reply=(src=192.168.1.2,dst=172.16.1.21,id=<cleared>,type=0,code=0),zone=<cleared>
> >
> +tcp,orig=(src=192.168.2.2,dst=192.168.1.2,sport=<cleared>,dport=<cleared>),reply=(src=192.168.1.2,dst=172.16.1.21,sport=<cleared>,dport=<cleared>),zone=<cleared>,protoinfo=(state=<cleared>)
> >  ])
> >
> >  AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > --
> > 2.46.2
> >
> > _______________________________________________
> > dev mailing list
> > [email protected]
> > https://mail.openvswitch.org/mailman/listinfo/ovs-dev
>


-- 

Ales Musil

Senior Software Engineer - OVN Core

Red Hat EMEA <https://www.redhat.com>

[email protected]
<https://red.ht/sig>
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