On Fri, Feb 14, 2025 at 8:44 AM Han Zhou <[email protected]> wrote:

>
>
> On Thu, Feb 13, 2025 at 11:23 AM Mark Michelson <[email protected]>
> wrote:
> >
> > Hi Ales,
> >
> > Regarding the code, it appears to do what Han had requested. From my
> > point of view, it looks good, but I'll defer to Han to give the OK from
> > his side as well before merging.
> >
> > I found some typos in the documentation, so see below for those. The
> > typos alone aren't enough to warrant a v6 of this patch. They can be
> > fixed during merge.
> >
> > Acked-by: Mark Michelson <[email protected]>
> >
> > On 2/13/25 11:44, Ales Musil wrote:
> > > Add LR option to commit all traffic that is not already committed
> > > 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.
> > >
> > > Reported-at: https://issues.redhat.com/browse/FDP-787
> > > Signed-off-by: Ales Musil <[email protected]>
>
> It would be good to indicate briefly in the commit message that this
> option also helps HW offload, and also add a "Fixes" tag for the commit:
> ffe267317c25 northd: Don't skip the unSNAT stage for traffic towards VIPs.
>

Hi Han and Mark,

thank you for the review. I have posted v6, hopefully I didn't miss
anything this time.


> > > ---
> > > v5: Rebase on top of latest main.
> > >      Address typos in commit message and documentation.
> > >      Keep the flow ct_commit {} intact if all NATs are stateless.
> > >      Add extra optimization flag when the unSNAT reports ct.new skip
> additional lookup in egress pipeline.
> > >
> > > v4: Rebase on top of latest main.
> > >      Adjust the option name.
> > >      Adjust the NEWS entry.
> > >      Update ovn-northd.8.xml.
> > >      Change the option so it affects both zones regardless if there is
> only stateful SNAT or DNAT.
> > >      Add comment about !ct.rpl optimization.
> > >
> > > v3: Rebase on top of latest main.
> > >      Add extra system test that checks specific scenario which was
> broken without this option.
> > > ---
> > >   NEWS                         |   2 +
> > >   include/ovn/logical-fields.h |   8 +
> > >   lib/logical-fields.c         |   8 +
> > >   northd/northd.c              | 199 +++++++++++--
> > >   northd/northd.h              |  39 +--
> > >   northd/ovn-northd.8.xml      | 119 ++++++--
> > >   ovn-nb.xml                   |   8 +
> > >   tests/ovn-northd.at          | 268 +++++++++++++++++
> > >   tests/system-ovn-kmod.at     | 556
> +++++++++++++++++++++++++++++++++++
> > >   9 files changed, 1143 insertions(+), 64 deletions(-)
> > >
> > > diff --git a/NEWS b/NEWS
> > > index 0b57792a2..f4eaa39d3 100644
> > > --- a/NEWS
> > > +++ b/NEWS
> > > @@ -78,6 +78,8 @@ Post v24.09.0
> > >          learned from a linux interfaces that is locally bound to the
> referenced
> > >          LSP will be learned. Additionally support local overwrites
> for arbitrary
> > >          interface names using "dynamic-routing-port-mapping".
> > > +   - Add "options:ct-commit-all" to LR, that enables commit of all
> traffic
> > > +     to DNAT and SNAT zone when LR is stateful.
> > >
> > >   OVN v24.09.0 - 13 Sep 2024
> > >   --------------------------
> > > diff --git a/include/ovn/logical-fields.h
> b/include/ovn/logical-fields.h
> > > index fbe73763e..196ac9dd8 100644
> > > --- a/include/ovn/logical-fields.h
> > > +++ b/include/ovn/logical-fields.h
> > > @@ -95,6 +95,8 @@ enum mff_log_flags_bits {
> > >       MLF_ICMP_SNAT_BIT = 17,
> > >       MLF_OVERRIDE_LOCAL_ONLY_BIT = 18,
> > >       MLF_FROM_CTRL_BIT = 19,
> > > +    MLF_UNSNAT_NEW_BIT = 20,
> > > +    MLF_UNSNAT_NOT_TRACKED_BIT = 21,
> > >   };
> > >
> > >   /* MFF_LOG_FLAGS_REG flag assignments */
> > > @@ -152,6 +154,12 @@ enum mff_log_flags {
> > >       MLF_ICMP_SNAT = (1 << MLF_ICMP_SNAT_BIT),
> > >
> > >       MLF_OVERRIDE_LOCAL_ONLY = (1 << MLF_OVERRIDE_LOCAL_ONLY_BIT),
> > > +
> > > +    /* Indicate that the packet went through unSNAT and had ct.new
> state. */
> > > +    MLF_UNSNAT_NEW = (1 << MLF_UNSNAT_NEW_BIT),
> > > +
> > > +    /* Indicate that the packet didn't go through unSNAT. */
> > > +    MLF_UNSNAT_NOT_TRACKED = (1 << MLF_UNSNAT_NOT_TRACKED_BIT)
> > >   };
> > >
> > >   /* OVN logical fields
> > > diff --git a/lib/logical-fields.c b/lib/logical-fields.c
> > > index df1b4243c..ed287f42b 100644
> > > --- a/lib/logical-fields.c
> > > +++ b/lib/logical-fields.c
> > > @@ -139,6 +139,14 @@ 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_UNSNAT_NEW_BIT);
> > > +    expr_symtab_add_subfield(symtab, "flags.unsnat_new", NULL,
> > > +                             flags_str);
> > > +    snprintf(flags_str, sizeof flags_str, "flags[%d]",
> > > +             MLF_UNSNAT_NOT_TRACKED_BIT);
> > > +    expr_symtab_add_subfield(symtab, "flags.unsnat_not_tracked", NULL,
> > > +                             flags_str);
> > >
> > >       snprintf(flags_str, sizeof flags_str, "flags[%d]",
> MLF_FROM_CTRL_BIT);
> > >       expr_symtab_add_subfield(symtab, "flags.from_ctrl", NULL,
> flags_str);
> > > diff --git a/northd/northd.c b/northd/northd.c
> > > index c6d632266..0941c9014 100644
> > > --- a/northd/northd.c
> > > +++ b/northd/northd.c
> > > @@ -16353,7 +16353,8 @@ build_lrouter_out_snat_flow(struct lflow_table
> *lflows,
> > >        * 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) {
> > > +        nat_entry->type == SNAT && !od->is_gw_router &&
> > > +        !smap_get_bool(&od->nbr->options, "ct-commit-all", false)) {
> > >           /* For traffic that comes from SNAT network, initiate CT
> state before
> > >            * entering S_ROUTER_OUT_SNAT to allow matching on various
> CT states.
> > >            */
> > > @@ -16657,6 +16658,8 @@ static void
> build_lr_nat_defrag_and_lb_default_flows(
> > >       /* Packets are allowed by default. */
> > >       ovn_lflow_add(lflows, od, S_ROUTER_IN_DEFRAG, 0, "1", "next;",
> lflow_ref);
> > >       ovn_lflow_add(lflows, od, S_ROUTER_IN_UNSNAT, 0, "1", "next;",
> lflow_ref);
> > > +    ovn_lflow_add(lflows, od, S_ROUTER_IN_POST_UNSNAT, 0, "1",
> "next;",
> > > +                  lflow_ref);
> > >       ovn_lflow_add(lflows, od, S_ROUTER_OUT_CHECK_DNAT_LOCAL, 0, "1",
> > >                     REGBIT_DST_NAT_IP_LOCAL" = 0; next;", lflow_ref);
> > >       ovn_lflow_add(lflows, od, S_ROUTER_OUT_SNAT, 0, "1", "next;",
> lflow_ref);
> > > @@ -16685,6 +16688,135 @@ static void
> build_lr_nat_defrag_and_lb_default_flows(
> > >                     lflow_ref);
> > >   }
> > >
> > > +static void
> > > +build_gw_lrouter_commit_all(const struct ovn_datapath *od,
> > > +                            struct lflow_table *lflows,
> > > +                            const struct chassis_features *features,
> > > +                            struct lflow_ref *lflow_ref)
> > > +{
> > > +    ovs_assert(od->is_gw_router);
> > > +    if (!(features->ct_commit_to_zone && features->ct_next_zone)) {
> > > +        return;
> > > +    }
> > > +
> > > +    /* Note: We can use match on "!ct.rpl" as optimization here, even
> if the
> > > +     * previous state is from different zone. The packet that is
> already reply
> > > +     * should be reply in both zones. */
> > > +    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);
> > > +
> > > +    /* We would lose the CT state especially the ct.new flag if we
> have
> > > +     * mixed SNAT and DNAT on single LR. In order to know if we
> actually
> > > +     * can commit into SNAT zone keep the flag in register. The SNAT
> flows
> > > +     * in the egress pipeline can then check the flag and commit
> > > +     * based on that. */
> > > +    ovn_lflow_add(lflows, od, S_ROUTER_IN_POST_UNSNAT, 10,
> > > +                  "ip && ct.new", "flags.unsnat_new = 1; next;",
> lflow_ref);
> > > +    ovn_lflow_add(lflows, od, S_ROUTER_IN_POST_UNSNAT, 10,
> > > +                  "ip && !ct.trk", "flags.unsnat_not_tracked = 1;
> next;",
> > > +                  lflow_ref);
> > > +
> > > +    /* Note: We can use match on "!ct.rpl" as optimization here, even
> if the
> > > +     * previous state is from different zone. The packet that is
> already reply
> > > +     * should be reply in both zones. */
> > > +    ovn_lflow_add(lflows, od, S_ROUTER_OUT_POST_UNDNAT, 10,
> > > +                  "ip && (!ct.trk || !ct.rpl) && "
> > > +                  "flags.unsnat_not_tracked == 1", "ct_next(snat);",
> > > +                  lflow_ref);
> > > +    ovn_lflow_add(lflows, od, S_ROUTER_OUT_POST_UNDNAT, 10,
> > > +                  "ip && flags.unsnat_new == 1", "next;", lflow_ref);
> > > +
> > > +    ovn_lflow_add(lflows, od, S_ROUTER_OUT_SNAT, 10,
> > > +                  "ip && (!ct.trk || !ct.rpl) && flags.unsnat_new ==
> 1",
> > > +                  "ct_commit_to_zone(snat);", lflow_ref);
> > > +    ovn_lflow_add(lflows, od, S_ROUTER_OUT_SNAT, 10,
> > > +                  "ip && ct.new && flags.unsnat_not_tracked == 1",
> > > +                  "ct_commit_to_zone(snat);", lflow_ref);
>
> Maybe not a real issue but I was thinking that the condition
> "flags.unsnat_not_tracked == 1" is not needed here. If it is ct.new we
> should just commit it because we want to commit all. In the end the outcome
> may be the same but I'd prefer the match condition as concise as possible,
> although not a strong opinion here.
>

I think it makes sense however considering the schedule for release I would
leave it in and I can prepare a follow up and test the effect of this, we
could always accept it as bug fix. Any objections?


>
> > > +}
> > > +
> > > +static void
> > > +build_dgp_lrouter_commit_all(const struct ovn_datapath *od,
> > > +                             const struct ovn_port *l3dgw_port,
> > > +                             struct lflow_table *lflows,
> > > +                             const struct chassis_features *features,
> > > +                             struct ds *match, struct lflow_ref
> *lflow_ref)
> > > +{
> > > +    ovs_assert(od->n_l3dgw_ports);
> > > +    if (!(features->ct_commit_to_zone && features->ct_next_zone)) {
> > > +        return;
> > > +    }
> > > +
> > > +    /* Note: We can use match on "!ct.rpl" as optimization here, even
> if the
> > > +     * previous state is from different zone. The packet that is
> already reply
> > > +     * should be reply in both zones. */
> > > +    ds_clear(match);
> > > +    ds_put_format(match, "ip && (!ct.trk || !ct.rpl) && "
> > > +                  "inport == %s && is_chassis_resident(%s)",
> > > +                  l3dgw_port->json_key,
> l3dgw_port->cr_port->json_key);
> > > +    ovn_lflow_add(lflows, od, S_ROUTER_IN_DEFRAG, 10, ds_cstr(match),
> > > +                  "ct_next(dnat);", lflow_ref);
> > > +
> > > +    ds_clear(match);
> > > +    ds_put_format(match, "ip && ct.new && inport == %s && "
> > > +                 "is_chassis_resident(%s)", l3dgw_port->json_key,
> > > +                 l3dgw_port->cr_port->json_key);
> > > +    ovn_lflow_add(lflows, od, S_ROUTER_IN_DNAT, 10, ds_cstr(match),
> > > +                  "ct_commit_to_zone(dnat);", lflow_ref);
> > > +
> > > +    /* We would lose the CT state especially the ct.new flag if we
> have
> > > +     * mixed SNAT and DNAT on single LR. In order to know if we
> actually
> > > +     * can commit into SNAT zone keep the flag in register. The SNAT
> flows
> > > +     * in the egress pipeline can then check the flag and commit
> > > +     * based on that. */
> > > +    ds_clear(match);
> > > +    ds_put_format(match, "ip && ct.new && "
> > > +                  "inport == %s && is_chassis_resident(%s)",
> > > +                  l3dgw_port->json_key,
> l3dgw_port->cr_port->json_key);
> > > +    ovn_lflow_add(lflows, od, S_ROUTER_IN_POST_UNSNAT, 10,
> ds_cstr(match),
> > > +                  "flags.unsnat_new = 1; next;", lflow_ref);
> > > +    ds_clear(match);
> > > +    ds_put_format(match, "ip && !ct.trk && "
> > > +                  "inport == %s && is_chassis_resident(%s)",
> > > +                  l3dgw_port->json_key,
> l3dgw_port->cr_port->json_key);
> > > +    ovn_lflow_add(lflows, od, S_ROUTER_IN_POST_UNSNAT, 10,
> ds_cstr(match),
> > > +                  "flags.unsnat_not_tracked = 1; next;",
> > > +                  lflow_ref);
> > > +
> > > +    /* Note: We can use match on "!ct.rpl" as optimization here, even
> if the
> > > +     * previous state is from different zone. The packet that is
> already reply
> > > +     * should be reply in both zones. */
> > > +    ds_clear(match);
> > > +    ds_put_format(match, "ip && (!ct.trk || !ct.rpl) && "
> > > +                  "flags.unsnat_not_tracked == 1 && outport == %s && "
> > > +                  "is_chassis_resident(%s)", l3dgw_port->json_key,
> > > +                  l3dgw_port->cr_port->json_key);
> > > +    ovn_lflow_add(lflows, od, S_ROUTER_OUT_POST_UNDNAT, 10,
> ds_cstr(match),
> > > +                  "ct_next(snat);", lflow_ref);
> > > +    ds_clear(match);
> > > +    ds_put_format(match, "ip && flags.unsnat_new == 1 && outport ==
> %s && "
> > > +                  "is_chassis_resident(%s)", l3dgw_port->json_key,
> > > +                  l3dgw_port->cr_port->json_key);
> > > +    ovn_lflow_add(lflows, od, S_ROUTER_OUT_POST_UNDNAT, 10,
> ds_cstr(match),
> > > +                  "next;", lflow_ref);
> > > +
> > > +    ds_clear(match);
> > > +    ds_put_format(match, "ip && (!ct.trk || !ct.rpl) && "
> > > +                  "flags.unsnat_new == 1 && outport == %s && "
> > > +                  "is_chassis_resident(%s)",
> > > +                  l3dgw_port->json_key,
> l3dgw_port->cr_port->json_key);
> > > +    ovn_lflow_add(lflows, od, S_ROUTER_OUT_SNAT, 10, ds_cstr(match),
> > > +                  "ct_commit_to_zone(snat);", lflow_ref);
> > > +    ds_clear(match);
> > > +    ds_put_format(match, "ip && ct.new && flags.unsnat_not_tracked ==
> 1 && "
> > > +                  "outport == %s && is_chassis_resident(%s)",
> > > +                  l3dgw_port->json_key,
> l3dgw_port->cr_port->json_key);
> > > +    ovn_lflow_add(lflows, od, S_ROUTER_OUT_SNAT, 10, ds_cstr(match),
> > > +                  "ct_commit_to_zone(snat);", lflow_ref);
> > > +}
> > > +
> > >   static void
> > >   build_lrouter_nat_defrag_and_lb(
> > >       const struct lr_stateful_record *lr_stateful_rec,
> > > @@ -16695,6 +16827,8 @@ build_lrouter_nat_defrag_and_lb(
> > >       const struct chassis_features *features,
> > >       struct lflow_ref *lflow_ref)
> > >   {
> > > +
> > > +    bool commit_all = smap_get_bool(&od->nbr->options,
> "ct-commit-all", false);
> > >       /* Ingress DNAT (Priority 50/70).
> > >        *
> > >        * Allow traffic that is related to an existing conntrack entry.
> > > @@ -16752,28 +16886,6 @@ build_lrouter_nat_defrag_and_lb(
> > >                         "next;", lflow_ref);
> > >       }
> > >
> > > -    /* If the router has load balancer or DNAT rules, re-circulate
> every packet
> > > -     * through the DNAT zone so that packets that need to be unDNATed
> in the
> > > -     * reverse direction get unDNATed.
> > > -     *
> > > -     * We also commit newly initiated connections in the reply
> direction to the
> > > -     * DNAT zone. This ensures that these flows are tracked. If the
> flow was
> > > -     * not committed, it would produce ongoing datapath flows with
> the ct.new
> > > -     * flag set. Some NICs are unable to offload these flows.
> > > -     */
> > > -    if (od->is_gw_router && (od->nbr->n_nat ||
> lr_stateful_rec->has_lb_vip)) {
> > > -        /* Do not send ND or ICMP packets to connection tracking. */
> > > -        ovn_lflow_add(lflows, od, S_ROUTER_OUT_UNDNAT, 100,
> > > -                      "nd || nd_rs || nd_ra", "next;",
> > > -                      lflow_ref);
> > > -        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
> > >        * l3dgw_ports (router has port(s) with gateway chassis
> > >        * specified). */
> > > @@ -16789,7 +16901,8 @@ 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 = (lr_stateful_rec->has_lb_vip ||
> 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];
> > >           const struct nbrec_nat *nat = nat_entry->nb;
> > > @@ -16807,6 +16920,8 @@ build_lrouter_nat_defrag_and_lb(
> > >               continue;
> > >           }
> > >
> > > +        stateful |= !stateless;
> > > +
> > >           /* S_ROUTER_IN_UNSNAT
> > >            * Ingress UNSNAT table: It is for already established
> connections'
> > >            * reverse traffic. i.e., SNAT has already been done in
> egress
> > > @@ -17019,6 +17134,42 @@ build_lrouter_nat_defrag_and_lb(
> > >           }
> > >       }
> > >
> > > +    /* If the router has load balancer or DNAT rules, re-circulate
> every packet
> > > +     * through the DNAT zone so that packets that need to be unDNATed
> in the
> > > +     * reverse direction get unDNATed.
> > > +     *
> > > +     * We also commit newly initiated connections in the reply
> direction to the
> > > +     * DNAT zone. This ensures that these flows are tracked. If the
> flow was
> > > +     * not committed, it would produce ongoing datapath flows with
> the ct.new
> > > +     * flag set. Some NICs are unable to offload these flows.
> > > +     */
> > > +    if (od->is_gw_router && (od->nbr->n_nat ||
> lr_stateful_rec->has_lb_vip)) {
> > > +        /* Do not send ND or ICMP packets to connection tracking. */
> > > +        ovn_lflow_add(lflows, od, S_ROUTER_OUT_UNDNAT, 100,
> > > +                      "nd || nd_rs || nd_ra", "next;",
> > > +                      lflow_ref);
> > > +        ovn_lflow_add(lflows, od, S_ROUTER_OUT_UNDNAT, 50,
> > > +                      "ip", "flags.loopback = 1; ct_dnat;",
> > > +                      lflow_ref);
> > > +        if (!(commit_all && stateful)) {
> > > +            ovn_lflow_add(lflows, od, S_ROUTER_OUT_POST_UNDNAT, 50,
> > > +                          "ip && ct.new", "ct_commit { } ; next; ",
> > > +                          lflow_ref);
> > > +        }
> > > +    }
> > > +
> > > +    if (commit_all && stateful) {
> > > +        if (od->is_gw_router) {
> > > +            build_gw_lrouter_commit_all(od, lflows, features,
> lflow_ref);
> > > +        }
> > > +
> > > +        for (size_t i = 0; i < od->n_l3dgw_ports; i++) {
> > > +            struct ovn_port *l3dgw_port = od->l3dgw_ports[i];
> > > +            build_dgp_lrouter_commit_all(od, l3dgw_port, lflows,
> > > +                                         features, match, 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/northd/northd.h b/northd/northd.h
> > > index 1f29645c7..b2c8da8fb 100644
> > > --- a/northd/northd.h
> > > +++ b/northd/northd.h
> > > @@ -517,27 +517,28 @@ enum ovn_stage {
> > >       PIPELINE_STAGE(ROUTER, IN,  IP_INPUT,        3,
> "lr_in_ip_input")     \
> > >       PIPELINE_STAGE(ROUTER, IN,  DHCP_RELAY_REQ,  4,
> "lr_in_dhcp_relay_req") \
> > >       PIPELINE_STAGE(ROUTER, IN,  UNSNAT,          5, "lr_in_unsnat")
>       \
> > > -    PIPELINE_STAGE(ROUTER, IN,  DEFRAG,          6, "lr_in_defrag")
>     \
> > > -    PIPELINE_STAGE(ROUTER, IN,  LB_AFF_CHECK,    7,
> "lr_in_lb_aff_check") \
> > > -    PIPELINE_STAGE(ROUTER, IN,  DNAT,            8, "lr_in_dnat")
>     \
> > > -    PIPELINE_STAGE(ROUTER, IN,  LB_AFF_LEARN,    9,
> "lr_in_lb_aff_learn") \
> > > -    PIPELINE_STAGE(ROUTER, IN,  ECMP_STATEFUL,   10,
> "lr_in_ecmp_stateful") \
> > > -    PIPELINE_STAGE(ROUTER, IN,  ND_RA_OPTIONS,   11,
> "lr_in_nd_ra_options") \
> > > -    PIPELINE_STAGE(ROUTER, IN,  ND_RA_RESPONSE,  12,
> "lr_in_nd_ra_response") \
> > > -    PIPELINE_STAGE(ROUTER, IN,  IP_ROUTING_PRE,  13,
> "lr_in_ip_routing_pre")  \
> > > -    PIPELINE_STAGE(ROUTER, IN,  IP_ROUTING,      14,
> "lr_in_ip_routing")      \
> > > -    PIPELINE_STAGE(ROUTER, IN,  IP_ROUTING_ECMP, 15,
> "lr_in_ip_routing_ecmp") \
> > > -    PIPELINE_STAGE(ROUTER, IN,  POLICY,          16, "lr_in_policy")
>          \
> > > -    PIPELINE_STAGE(ROUTER, IN,  POLICY_ECMP,     17,
> "lr_in_policy_ecmp")     \
> > > -    PIPELINE_STAGE(ROUTER, IN,  DHCP_RELAY_RESP_CHK, 18,
>          \
> > > +    PIPELINE_STAGE(ROUTER, IN,  POST_UNSNAT,     6,
> "lr_in_post_unsnat")  \
> > > +    PIPELINE_STAGE(ROUTER, IN,  DEFRAG,          7, "lr_in_defrag")
>     \
> > > +    PIPELINE_STAGE(ROUTER, IN,  LB_AFF_CHECK,    8,
> "lr_in_lb_aff_check") \
> > > +    PIPELINE_STAGE(ROUTER, IN,  DNAT,            9, "lr_in_dnat")
>     \
> > > +    PIPELINE_STAGE(ROUTER, IN,  LB_AFF_LEARN,    10,
> "lr_in_lb_aff_learn") \
> > > +    PIPELINE_STAGE(ROUTER, IN,  ECMP_STATEFUL,   11,
> "lr_in_ecmp_stateful") \
> > > +    PIPELINE_STAGE(ROUTER, IN,  ND_RA_OPTIONS,   12,
> "lr_in_nd_ra_options") \
> > > +    PIPELINE_STAGE(ROUTER, IN,  ND_RA_RESPONSE,  13,
> "lr_in_nd_ra_response") \
> > > +    PIPELINE_STAGE(ROUTER, IN,  IP_ROUTING_PRE,  14,
> "lr_in_ip_routing_pre")  \
> > > +    PIPELINE_STAGE(ROUTER, IN,  IP_ROUTING,      15,
> "lr_in_ip_routing")      \
> > > +    PIPELINE_STAGE(ROUTER, IN,  IP_ROUTING_ECMP, 16,
> "lr_in_ip_routing_ecmp") \
> > > +    PIPELINE_STAGE(ROUTER, IN,  POLICY,          17, "lr_in_policy")
>          \
> > > +    PIPELINE_STAGE(ROUTER, IN,  POLICY_ECMP,     18,
> "lr_in_policy_ecmp")     \
> > > +    PIPELINE_STAGE(ROUTER, IN,  DHCP_RELAY_RESP_CHK, 19,
>          \
> > >                     "lr_in_dhcp_relay_resp_chk")
>          \
> > > -    PIPELINE_STAGE(ROUTER, IN,  DHCP_RELAY_RESP, 19,
>          \
> > > +    PIPELINE_STAGE(ROUTER, IN,  DHCP_RELAY_RESP, 20,
>          \
> > >                     "lr_in_dhcp_relay_resp")
>          \
> > > -    PIPELINE_STAGE(ROUTER, IN,  ARP_RESOLVE,     20,
> "lr_in_arp_resolve")     \
> > > -    PIPELINE_STAGE(ROUTER, IN,  CHK_PKT_LEN,     21,
> "lr_in_chk_pkt_len")     \
> > > -    PIPELINE_STAGE(ROUTER, IN,  LARGER_PKTS,     22,
> "lr_in_larger_pkts")     \
> > > -    PIPELINE_STAGE(ROUTER, IN,  GW_REDIRECT,     23,
> "lr_in_gw_redirect")     \
> > > -    PIPELINE_STAGE(ROUTER, IN,  ARP_REQUEST,     24,
> "lr_in_arp_request")     \
> > > +    PIPELINE_STAGE(ROUTER, IN,  ARP_RESOLVE,     21,
> "lr_in_arp_resolve")     \
> > > +    PIPELINE_STAGE(ROUTER, IN,  CHK_PKT_LEN,     22,
> "lr_in_chk_pkt_len")     \
> > > +    PIPELINE_STAGE(ROUTER, IN,  LARGER_PKTS,     23,
> "lr_in_larger_pkts")     \
> > > +    PIPELINE_STAGE(ROUTER, IN,  GW_REDIRECT,     24,
> "lr_in_gw_redirect")     \
> > > +    PIPELINE_STAGE(ROUTER, IN,  ARP_REQUEST,     25,
> "lr_in_arp_request")     \
> > >
>   \
> > >       /* Logical router egress stages. */
>   \
> > >       PIPELINE_STAGE(ROUTER, OUT, CHECK_DNAT_LOCAL,   0,
>         \
> > > diff --git a/northd/ovn-northd.8.xml b/northd/ovn-northd.8.xml
> > > index 93b1a9135..ebad38488 100644
> > > --- a/northd/ovn-northd.8.xml
> > > +++ b/northd/ovn-northd.8.xml
> > > @@ -3667,7 +3667,26 @@ next;
> > >         </li>
> > >       </ul>
> > >
> > > -    <h3>Ingress Table 6: DEFRAG</h3>
> > > +    <h3>Ingress Table 6: POST USNAT</h3>
> > > +
> > > +    <p>
> > > +      This is to check whether the packet is already tracked in SNAT
> zone.
> > > +      It contains a priority-0 flow that simply moves traffic to the
> next
> > > +      table.
> > > +    </p>
> > > +
> > > +    <p>
> > > +      If the <code>options:ct-commit-all</code> is set to
> <code>true</code> the
> > > +      following two flows are configured matching on <code>ip
> &amp;&amp;
> > > +      ct.new</code> with an action <code>flags.unsnat_new = 1; next;
> </code>
> > > +      and <code>ip &amp;&amp; !ct.trk</code> with an action
> > > +      <code>flags.unsnat_not_tracked = 1; next;</code> Which sets ome
> of the
> >
> > s/ome/one/
> >
> > > +      flags that is used in later stages. There is extra match on
> both when
> > > +      there is configured DGP
> > > +      <code>inport == DGP &amp;&amp;
> is_chassis_resident(CHASSIS)</code>.
> > > +    </p>
> > > +
> > > +    <h3>Ingress Table 7: DEFRAG</h3>
> > >
> > >       <p>
> > >         This is to send packets to connection tracker for tracking and
> > > @@ -3710,7 +3729,15 @@ next;
> > >         this allows potentially related ICMP traffic to pass through
> CT.
> > >       </p>
> > >
> > > -    <h3>Ingress Table 7: Load balancing affinity check</h3>
> > > +    <p>
> > > +      If the <code>optinos:ct-commit-all</code> is set to
> <code>true</code>
> >
> > s/optinos/options/
> >
> > > +      the following flow is configured matching on <code>ip &amp;&amp;
> > > +      (!ct.trk || !ct.rpl)</code> with an action
> <code>ct_next(dnat);</code>.
> > > +      There is extra match when the LR is configured as DGP
> > > +      <code>inport == DGP &amp;&amp;
> is_chassis_resident(CHASSIS)</code>.
> > > +    </p>
> > > +
> > > +   <h3>Ingress Table 8: Load balancing affinity check</h3>
> > >
> > >       <p>
> > >         Load balancing affinity check table contains the following
> > > @@ -3737,7 +3764,7 @@ next;
> > >         </li>
> > >       </ul>
> > >
> > > -    <h3>Ingress Table 8: DNAT</h3>
> > > +    <h3>Ingress Table 9: DNAT</h3>
> > >
> > >       <p>
> > >         Packets enter the pipeline with destination IP address that
> needs to
> > > @@ -3866,7 +3893,7 @@ next;
> > >         </li>
> > >       </ul>
> > >
> > > -    <p>Ingress Table 8: DNAT on Gateway Routers</p>
> > > +    <p>Ingress Table 9: DNAT on Gateway Routers</p>
> > >
> > >       <ul>
> > >         <li>
> > > @@ -3919,13 +3946,21 @@ next;
> > >           </p>
> > >         </li>
> > >
> > > +      <li>
> > > +        <p>
> > > +          If the <code>options:ct-commit-all</code> is set to
> <code>true</code>
> > > +          the following flow is configured matching on <code>ip
> &amp;&amp;
> > > +          ct.new</code> with an action
> <code>ct_commit_to_zone(dnat);</code>.
> > > +        </p>
> > > +      </li>
> > > +
> > >         <li>
> > >           A priority-0 logical flow with match <code>1</code> has
> actions
> > >           <code>next;</code>.
> > >         </li>
> > >       </ul>
> > >
> > > -    <p>Ingress Table 8: DNAT on Distributed Routers</p>
> > > +    <p>Ingress Table 9: DNAT on Distributed Routers</p>
> > >
> > >       <p>
> > >         On distributed routers, the DNAT table only handles packets
> > > @@ -3973,6 +4008,14 @@ next;
> > >             <code>exempted_ext_ips</code>.
> > >           </p>
> > >
> > > +        <p>
> > > +          If the <code>options:ct-commit-all</code> is set to
> <code>true</code>
> > > +          the following flow is configured matching on <code>ip
> &amp;&amp;
> > > +          ct.new &amp;&amp; inport == DGP &amp;&amp;
> > > +          is_chassis_resident(CHASSIS)</code> with an action
> > > +          <code>ct_commit_to_zone(dnat);</code>.
> > > +        </p>
> > > +
> > >           <p>
> > >             A priority-0 logical flow with match <code>1</code> has
> actions
> > >             <code>next;</code>.
> > > @@ -3980,7 +4023,7 @@ next;
> > >         </li>
> > >       </ul>
> > >
> > > -    <h3>Ingress Table 9: Load balancing affinity learn</h3>
> > > +   <h3>Ingress Table 10: Load balancing affinity learn</h3>
> > >
> > >       <p>
> > >         Load balancing affinity learn table contains the following
> > > @@ -4008,7 +4051,7 @@ next;
> > >         </li>
> > >       </ul>
> > >
> > > -    <h3>Ingress Table 10: ECMP symmetric reply processing</h3>
> > > +   <h3>Ingress Table 11: ECMP symmetric reply processing</h3>
> > >       <ul>
> > >         <li>
> > >           If ECMP routes with symmetric reply are configured in the
> > > @@ -4027,7 +4070,7 @@ next;
> > >         </li>
> > >       </ul>
> > >
> > > -    <h3>Ingress Table 11: IPv6 ND RA option processing</h3>
> > > +   <h3>Ingress Table 12: IPv6 ND RA option processing</h3>
> > >
> > >       <ul>
> > >         <li>
> > > @@ -4057,7 +4100,7 @@ reg0[5] =
> put_nd_ra_opts(<var>options</var>);next;
> > >         </li>
> > >       </ul>
> > >
> > > -    <h3>Ingress Table 12: IPv6 ND RA responder</h3>
> > > +    <h3>Ingress Table 13: IPv6 ND RA responder</h3>
> > >
> > >       <p>
> > >         This table implements IPv6 ND RA responder for the IPv6 ND RA
> replies
> > > @@ -4102,7 +4145,7 @@ output;
> > >         </li>
> > >       </ul>
> > >
> > > -    <h3>Ingress Table 13: IP Routing Pre</h3>
> > > +   <h3>Ingress Table 14: IP Routing Pre</h3>
> > >
> > >       <p>
> > >         If a packet arrived at this table from Logical Router Port
> <var>P</var>
> > > @@ -4132,7 +4175,7 @@ output;
> > >         </li>
> > >       </ul>
> > >
> > > -    <h3>Ingress Table 14: IP Routing</h3>
> > > +   <h3>Ingress Table 15: IP Routing</h3>
> > >
> > >       <p>
> > >         A packet that arrives at this table is an IP packet that
> should be
> > > @@ -4349,7 +4392,7 @@ reg8[16..31] = <var>MID1</var>);
> > >         </li>
> > >       </ul>
> > >
> > > -    <h3>Ingress Table 15: IP_ROUTING_ECMP</h3>
> > > +    <h3>Ingress Table 16: IP_ROUTING_ECMP</h3>
> > >
> > >       <p>
> > >         This table implements the second part of IP routing for ECMP
> routes
> > > @@ -4406,7 +4449,7 @@ outport = <var>P</var>;
> > >         </li>
> > >       </ul>
> > >
> > > -    <h3>Ingress Table 16: Router policies</h3>
> > > +   <h3>Ingress Table 17: Router policies</h3>
> > >       <p>
> > >         This table adds flows for the logical router policies
> configured
> > >         on the logical router. Please see the
> > > @@ -4478,7 +4521,7 @@ next;
> > >         </li>
> > >       </ul>
> > >
> > > -    <h3>Ingress Table 17: ECMP handling for router policies</h3>
> > > +    <h3>Ingress Table 18: ECMP handling for router policies</h3>
> > >       <p>
> > >         This table handles the ECMP for the router policies configured
> > >         with multiple nexthops.
> > > @@ -4527,7 +4570,7 @@ outport = <var>P</var>
> > >         </li>
> > >       </ul>
> > >
> > > -    <h3>Ingress Table 18: DHCP Relay Response Check</h3>
> > > +    <h3>Ingress Table 19: DHCP Relay Response Check</h3>
> > >       <p>
> > >         This stage process the DHCP response packets coming from the
> DHCP server.
> > >       </p>
> > > @@ -4561,7 +4604,7 @@ outport = <var>P</var>
> > >         </li>
> > >       </ul>
> > >
> > > -    <h3>Ingress Table 19: DHCP Relay Response</h3>
> > > +    <h3>Ingress Table 20: DHCP Relay Response</h3>
> > >       <p>
> > >         This stage process the DHCP response packets on which
> > >         <code>dhcp_relay_resp_chk</code> action is applied in the
> previous stage.
> > > @@ -4604,7 +4647,7 @@ output;
> > >         </li>
> > >       </ul>
> > >
> > > -    <h3>Ingress Table 20: ARP/ND Resolution</h3>
> > > +   <h3>Ingress Table 21: ARP/ND Resolution</h3>
> > >
> > >       <p>
> > >         Any packet that reaches this table is an IP packet whose
> next-hop
> > > @@ -4818,7 +4861,7 @@ output;
> > >
> > >       </ul>
> > >
> > > -    <h3>Ingress Table 21: Check packet length</h3>
> > > +   <h3>Ingress Table 22: Check packet length</h3>
> > >
> > >       <p>
> > >         For distributed logical routers or gateway routers with gateway
> > > @@ -4855,7 +4898,7 @@ REGBIT_PKT_LARGER =
> check_pkt_larger(<var>L</var>); next;
> > >         and advances to the next table.
> > >       </p>
> > >
> > > -    <h3>Ingress Table 22: Handle larger packets</h3>
> > > +   <h3>Ingress Table 23: Handle larger packets</h3>
> > >
> > >       <p>
> > >         For distributed logical routers or gateway routers with
> gateway port
> > > @@ -4918,7 +4961,7 @@ icmp6 {
> > >         and advances to the next table.
> > >       </p>
> > >
> > > -    <h3>Ingress Table 23: Gateway Redirect</h3>
> > > +   <h3>Ingress Table 24: Gateway Redirect</h3>
> > >
> > >       <p>
> > >         For distributed logical routers where one or more of the
> logical router
> > > @@ -5002,7 +5045,7 @@ icmp6 {
> > >         </li>
> > >       </ul>
> > >
> > > -    <h3>Ingress Table 24: ARP Request</h3>
> > > +   <h3>Ingress Table 25: ARP Request</h3>
> > >
> > >       <p>
> > >         In the common case where the Ethernet destination has been
> resolved, this
> > > @@ -5202,6 +5245,16 @@ nd_ns {
> > >             with action <code>ct_commit { } ; next; </code>.
> > >           </li>
> > >
> > > +        <li>
> > > +          If the <code>options:ct-commit-all</code> is set to
> <code>true</code>
> > > +          the following flows are configured matching on <code>ip
> &amp;&amp;
> > > +          (!ct.trk || !ct.rpl) &amp;&amp; flags.unsnat_not_tracked ==
> 1</code>
> > > +          with  an action <code>ct_next(snat);</code> and <code>ip
> &amp;&amp;
> > > +          flags.unsnat_new == 1</code> with an actin
> <code>next;</code>. There
> >
> > s/actin/action/
> >
> > > +          is extra match when there is configured DGP
> > > +          <code>outport == DGP &amp;&amp;
> is_chassis_resident(CHASSIS)</code>.
> > > +        </li>
> > > +
> > >           <li>
> > >             A priority-0 logical flow with match <code>1</code> has
> actions
> > >           <code>next;</code>.
> > > @@ -5332,6 +5385,17 @@ nd_ns {
> > >           </p>
> > >         </li>
> > >
> > > +      <li>
> > > +        <p>
> > > +          If the <code>options:ct-commit-all</code> is set to
> <code>true</code>
> > > +          the following two flows are configured matching on <code> ip
> > > +          &amp;&amp; (!ct.trk || !ct.rpl) &amp;&amp;
> > > +          flags.unsnat_new == 1</code> and
> > > +          <code>ip &amp;&amp; ct.new &amp;&amp;
> flags.unsnat_not_tracked == 1
> > > +          </code> both with an action
> <code>ct_commit_to_zone(snat);</code>.
> > > +        </p>
> > > +      </li>
> > > +
> > >         <li>
> > >           <p>
> > >             A priority-0 logical flow with match <code>1</code> has
> actions
> > > @@ -5412,6 +5476,19 @@ nd_ns {
> > >           initiated from the internal or external network.
> > >         </li>
> > >
> > > +      <li>
> > > +        <p>
> > > +          If the <code>options:ct-commit-all</code> is set to
> <code>true</code>
> > > +          the following two flows are configured matching on <code>ip
> > > +          &amp;&amp; (!ct.trk || !ct.rpl) &amp;&amp; flags.unsnat_new
> == 1
> > > +          &amp;&amp; outport == DGP &amp;&amp;
> is_chassis_resident(CHASSIS)
> > > +          </code> and <code>ip &amp;&amp; ct.new &amp;&amp;
> > > +          flags.unsnat_not_tracked == 1 &amp;&amp; outport == DGP
> &amp;&amp;
> > > +          is_chassis_resident(CHASSIS)</code>both  with an action
> > > +          <code>ct_commit_to_zone(snat);</code>.
> > > +        </p>
> > > +      </li>
> > > +
> > >         <li>
> > >           A priority-0 logical flow with match <code>1</code> has
> actions
> > >           <code>next;</code>.
> > > diff --git a/ovn-nb.xml b/ovn-nb.xml
> > > index 20d30dd58..04082a8c5 100644
> > > --- a/ovn-nb.xml
> > > +++ b/ovn-nb.xml
> > > @@ -3132,6 +3132,14 @@ or
> > >                  table="Logical_Router"/> on the Logical_Router.
> > >           </p>
> > >         </column>
> > > +
> > > +      <column name="options" key="ct-commit-all" type='{"type":
> "boolean"}'>
> > > +        When enabled the LR will commit traffic in a zone that is
> stateful.
> > > +        The traffic is not commited to both zones but it is selective
> based
> > > +        whether there is stateful DNAT/SNAT or both. The commit all
> will
> > > +        prevent issues with <code>ct.inv</code> packets as it will
> prevent
> > > +        the commit of reply traffic, which could happen in some cases.
> > > +      </column>
>
> I commented in v3 that we should document that this option is important
> for HW offloading, so probably you forgot to update here?
> "It is worth indicating that this flag is also required for HW offload to
> work, because otherwise there would be asymmetric CT zone traverse,
> resulting in one direction always getting ct.new state which breaks HW
> offload."
>

I have missed that, it will be in v6.


> Thank you again for working this out. With the above minor comments
> addressed:
>
> Acked-by: Han Zhou <[email protected]>
>
> > >       </group>
> > >
> > >       <group title="Common Columns">
> > > diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
> > > index 7455764fe..7859c51c7 100644
> > > --- a/tests/ovn-northd.at
> > > +++ b/tests/ovn-northd.at
> > > @@ -15673,3 +15673,271 @@ CHECK_NO_CHANGE_AFTER_RECOMPUTE
> > >
> > >   AT_CLEANUP
> > >   ])
> > > +
> > > +OVN_FOR_EACH_NORTHD_NO_HV_PARALLELIZATION([
> > > +AT_SETUP([ovn -- LR ct-commit-all])
> > > +ovn_start
> > > +
> > > +check ovn-nbctl ls-add sw0
> > > +check ovn-nbctl lr-add lr0
> > > +check ovn-nbctl lrp-add lr0 lr0-sw0 00:00:00:00:ff:01 10.0.0.1/24
> > > +check ovn-nbctl lsp-add sw0 sw0-lr0
> > > +check ovn-nbctl lsp-set-type sw0-lr0 router
> > > +check ovn-nbctl lsp-set-addresses sw0-lr0 00:00:00:00:ff:01
> > > +check ovn-nbctl lsp-set-options sw0-lr0 router-port=lr0-sw0
> > > +check ovn-nbctl set logical_router lr0 options:ct-commit-all="true"
> > > +check ovn-nbctl --wait=sb sync
> > > +
> > > +check ovn-sbctl chassis-add gw1 geneve 127.0.0.1 \
> > > +  -- set chassis gw1 other_config:ct-commit-to-zone="true" \
> > > +  -- set chassis gw1 other_config:ct-next-zone="true"
> > > +
> > > +ovn-sbctl dump-flows lr0 > lr0flows
> > > +AT_CAPTURE_FILE([lr0flows])
> > > +
> > > +AT_CHECK([grep "lr_in_post_unsnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> > > +  table=??(lr_in_post_unsnat  ), priority=0    , match=(1),
> action=(next;)
> > > +])
> > > +
> > > +AT_CHECK([grep "lr_in_defrag" lr0flows | ovn_strip_lflows], [0], [dnl
> > > +  table=??(lr_in_defrag       ), priority=0    , match=(1),
> action=(next;)
> > > +])
> > > +
> > > +AT_CHECK([grep "lr_in_dnat" lr0flows | ovn_strip_lflows], [0], [dnl
> > > +  table=??(lr_in_dnat         ), priority=0    , match=(1),
> action=(next;)
> > > +])
> > > +
> > > +AT_CHECK([grep "lr_out_post_undnat" lr0flows | ovn_strip_lflows],
> [0], [dnl
> > > +  table=??(lr_out_post_undnat ), priority=0    , match=(1),
> action=(next;)
> > > +])
> > > +
> > > +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=120  , match=(nd_ns),
> action=(next;)
> > > +])
> > > +
> > > +
> > > +# Create a distributed gw port on lr0
> > > +check ovn-nbctl ls-add public
> > > +check ovn-nbctl lrp-add lr0 lr0-public 00:00:00:00:ff:02
> 172.168.0.10/24
> > > +check ovn-nbctl lrp-set-gateway-chassis lr0-public gw1
> > > +
> > > +check ovn-nbctl lsp-add public public-lr0 \
> > > +    -- set Logical_Switch_Port public-lr0 \
> > > +        type=router options:router-port=lr0-public \
> > > +    -- lsp-set-addresses public-lr0 router
> > > +
> > > +# Add SNAT
> > > +check ovn-nbctl lr-nat-add lr0 snat 172.168.0.10 10.0.0.0/24
> > > +
> > > +ovn-sbctl dump-flows lr0 > lr0flows
> > > +AT_CAPTURE_FILE([lr0flows])
> > > +
> > > +AT_CHECK([grep "lr_in_post_unsnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> > > +  table=??(lr_in_post_unsnat  ), priority=0    , match=(1),
> action=(next;)
> > > +  table=??(lr_in_post_unsnat  ), priority=10   , match=(ip && !ct.trk
> && inport == "lr0-public" && is_chassis_resident("cr-lr0-public")),
> action=(flags.unsnat_not_tracked = 1; next;)
> > > +  table=??(lr_in_post_unsnat  ), priority=10   , match=(ip && ct.new
> && inport == "lr0-public" && is_chassis_resident("cr-lr0-public")),
> action=(flags.unsnat_new = 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) && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), 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
> && inport == "lr0-public" && is_chassis_resident("cr-lr0-public")),
> action=(ct_commit_to_zone(dnat);)
> > > +])
> > > +
> > > +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.unsnat_not_tracked == 1 && outport ==
> "lr0-public" && is_chassis_resident("cr-lr0-public")),
> action=(ct_next(snat);)
> > > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip &&
> flags.unsnat_new == 1 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(next;)
> > > +])
> > > +
> > > +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.trk || !ct.rpl) && flags.unsnat_new == 1 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_commit_to_zone(snat);)
> > > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new
> && flags.unsnat_not_tracked == 1 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), 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(172.168.0.10);)
> > > +])
> > > +
> > > +check ovn-nbctl lr-nat-del lr0
> > > +
> > > +# Add LB to lr0
> > > +check ovn-nbctl lb-add lb0 172.168.0.100:8082 "10.0.0.50:82,
> 10.0.0.60:82"
> > > +check ovn-nbctl lr-lb-add lr0 lb0
> > > +check ovn-nbctl --wait=sb sync
> > > +
> > > +ovn-sbctl dump-flows lr0 > lr0flows
> > > +AT_CAPTURE_FILE([lr0flows])
> > > +
> > > +AT_CHECK([grep "lr_in_post_unsnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> > > +  table=??(lr_in_post_unsnat  ), priority=0    , match=(1),
> action=(next;)
> > > +  table=??(lr_in_post_unsnat  ), priority=10   , match=(ip && !ct.trk
> && inport == "lr0-public" && is_chassis_resident("cr-lr0-public")),
> action=(flags.unsnat_not_tracked = 1; next;)
> > > +  table=??(lr_in_post_unsnat  ), priority=10   , match=(ip && ct.new
> && inport == "lr0-public" && is_chassis_resident("cr-lr0-public")),
> action=(flags.unsnat_new = 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) && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_next(dnat);)
> > > +  table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.100), 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
> && inport == "lr0-public" && is_chassis_resident("cr-lr0-public")),
> action=(ct_commit_to_zone(dnat);)
> > > +  table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.0.100 && tcp && tcp.dst == 8082 &&
> is_chassis_resident("cr-lr0-public")), action=(ct_lb_mark(backends=
> 10.0.0.50:82,10.0.0.60:82);)
> > > +  table=??(lr_in_dnat         ), priority=50   , match=(ct.est &&
> !ct.rel && !ct.new && !ct.rpl && ct_mark.natted), action=(next;)
> > > +  table=??(lr_in_dnat         ), priority=50   , match=(ct.rel &&
> !ct.est && !ct.new && !ct.rpl), action=(ct_commit_nat;)
> > > +  table=??(lr_in_dnat         ), priority=70   , match=(ct.est &&
> !ct.rel && !ct.new && !ct.rpl && ct_mark.natted && ct_mark.force_snat ==
> 1), action=(flags.force_snat_for_lb = 1; next;)
> > > +  table=??(lr_in_dnat         ), priority=70   , match=(ct.est &&
> !ct.rel && !ct.new && !ct.rpl && ct_mark.natted && ct_mark.skip_snat == 1),
> action=(flags.skip_snat_for_lb = 1; next;)
> > > +  table=??(lr_in_dnat         ), priority=70   , match=(ct.rel &&
> !ct.est && !ct.new && !ct.rpl && ct_mark.force_snat == 1),
> action=(flags.force_snat_for_lb = 1; ct_commit_nat;)
> > > +  table=??(lr_in_dnat         ), priority=70   , match=(ct.rel &&
> !ct.est && !ct.new && !ct.rpl && ct_mark.skip_snat == 1),
> action=(flags.skip_snat_for_lb = 1; ct_commit_nat;)
> > > +])
> > > +
> > > +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.unsnat_not_tracked == 1 && outport ==
> "lr0-public" && is_chassis_resident("cr-lr0-public")),
> action=(ct_next(snat);)
> > > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip &&
> flags.unsnat_new == 1 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(next;)
> > > +])
> > > +
> > > +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.trk || !ct.rpl) && flags.unsnat_new == 1 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_commit_to_zone(snat);)
> > > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new
> && flags.unsnat_not_tracked == 1 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_commit_to_zone(snat);)
> > > +  table=??(lr_out_snat        ), priority=120  , match=(nd_ns),
> action=(next;)
> > > +])
> > > +
> > > +# Add SNAT again
> > > +check ovn-nbctl lr-nat-add lr0 snat 172.168.0.10 10.0.0.0/24
> > > +check ovn-nbctl --wait=sb sync
> > > +
> > > +ovn-sbctl dump-flows lr0 > lr0flows
> > > +AT_CAPTURE_FILE([lr0flows])
> > > +
> > > +AT_CHECK([grep "lr_in_post_unsnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> > > +  table=??(lr_in_post_unsnat  ), priority=0    , match=(1),
> action=(next;)
> > > +  table=??(lr_in_post_unsnat  ), priority=10   , match=(ip && !ct.trk
> && inport == "lr0-public" && is_chassis_resident("cr-lr0-public")),
> action=(flags.unsnat_not_tracked = 1; next;)
> > > +  table=??(lr_in_post_unsnat  ), priority=10   , match=(ip && ct.new
> && inport == "lr0-public" && is_chassis_resident("cr-lr0-public")),
> action=(flags.unsnat_new = 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) && inport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_next(dnat);)
> > > +  table=??(lr_in_defrag       ), priority=100  , match=(ip && ip4.dst
> == 172.168.0.100), 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
> && inport == "lr0-public" && is_chassis_resident("cr-lr0-public")),
> action=(ct_commit_to_zone(dnat);)
> > > +  table=??(lr_in_dnat         ), priority=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.0.100 && tcp && tcp.dst == 8082 &&
> is_chassis_resident("cr-lr0-public")), action=(ct_lb_mark(backends=
> 10.0.0.50:82,10.0.0.60:82);)
> > > +  table=??(lr_in_dnat         ), priority=50   , match=(ct.est &&
> !ct.rel && !ct.new && !ct.rpl && ct_mark.natted), action=(next;)
> > > +  table=??(lr_in_dnat         ), priority=50   , match=(ct.rel &&
> !ct.est && !ct.new && !ct.rpl), action=(ct_commit_nat;)
> > > +  table=??(lr_in_dnat         ), priority=70   , match=(ct.est &&
> !ct.rel && !ct.new && !ct.rpl && ct_mark.natted && ct_mark.force_snat ==
> 1), action=(flags.force_snat_for_lb = 1; next;)
> > > +  table=??(lr_in_dnat         ), priority=70   , match=(ct.est &&
> !ct.rel && !ct.new && !ct.rpl && ct_mark.natted && ct_mark.skip_snat == 1),
> action=(flags.skip_snat_for_lb = 1; next;)
> > > +  table=??(lr_in_dnat         ), priority=70   , match=(ct.rel &&
> !ct.est && !ct.new && !ct.rpl && ct_mark.force_snat == 1),
> action=(flags.force_snat_for_lb = 1; ct_commit_nat;)
> > > +  table=??(lr_in_dnat         ), priority=70   , match=(ct.rel &&
> !ct.est && !ct.new && !ct.rpl && ct_mark.skip_snat == 1),
> action=(flags.skip_snat_for_lb = 1; ct_commit_nat;)
> > > +])
> > > +
> > > +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.unsnat_not_tracked == 1 && outport ==
> "lr0-public" && is_chassis_resident("cr-lr0-public")),
> action=(ct_next(snat);)
> > > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip &&
> flags.unsnat_new == 1 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(next;)
> > > +])
> > > +
> > > +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.trk || !ct.rpl) && flags.unsnat_new == 1 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), action=(ct_commit_to_zone(snat);)
> > > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new
> && flags.unsnat_not_tracked == 1 && outport == "lr0-public" &&
> is_chassis_resident("cr-lr0-public")), 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(172.168.0.10);)
> > > +])
> > > +
> > > +# Make the logical router as Gateway router
> > > +check ovn-nbctl lrp-del-gateway-chassis lr0-public gw1
> > > +check ovn-nbctl set logical_router lr0 options:chassis=gw1
> > > +check ovn-nbctl --wait=sb sync
> > > +
> > > +ovn-sbctl dump-flows lr0 > lr0flows
> > > +AT_CAPTURE_FILE([lr0flows])
> > > +
> > > +AT_CHECK([grep "lr_in_post_unsnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> > > +  table=??(lr_in_post_unsnat  ), priority=0    , match=(1),
> action=(next;)
> > > +  table=??(lr_in_post_unsnat  ), priority=10   , match=(ip &&
> !ct.trk), action=(flags.unsnat_not_tracked = 1; next;)
> > > +  table=??(lr_in_post_unsnat  ), priority=10   , match=(ip &&
> ct.new), action=(flags.unsnat_new = 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
> == 172.168.0.100), 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 == 172.168.0.100 && tcp && tcp.dst == 8082),
> action=(ct_lb_mark(backends=10.0.0.50:82,10.0.0.60:82);)
> > > +  table=??(lr_in_dnat         ), priority=50   , match=(ct.est &&
> !ct.rel && !ct.new && !ct.rpl && ct_mark.natted), action=(next;)
> > > +  table=??(lr_in_dnat         ), priority=50   , match=(ct.rel &&
> !ct.est && !ct.new && !ct.rpl), action=(ct_commit_nat;)
> > > +  table=??(lr_in_dnat         ), priority=70   , match=(ct.est &&
> !ct.rel && !ct.new && !ct.rpl && ct_mark.natted && ct_mark.force_snat ==
> 1), action=(flags.force_snat_for_lb = 1; next;)
> > > +  table=??(lr_in_dnat         ), priority=70   , match=(ct.est &&
> !ct.rel && !ct.new && !ct.rpl && ct_mark.natted && ct_mark.skip_snat == 1),
> action=(flags.skip_snat_for_lb = 1; next;)
> > > +  table=??(lr_in_dnat         ), priority=70   , match=(ct.rel &&
> !ct.est && !ct.new && !ct.rpl && ct_mark.force_snat == 1),
> action=(flags.force_snat_for_lb = 1; ct_commit_nat;)
> > > +  table=??(lr_in_dnat         ), priority=70   , match=(ct.rel &&
> !ct.est && !ct.new && !ct.rpl && ct_mark.skip_snat == 1),
> action=(flags.skip_snat_for_lb = 1; ct_commit_nat;)
> > > +])
> > > +
> > > +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.unsnat_not_tracked == 1),
> action=(ct_next(snat);)
> > > +  table=??(lr_out_post_undnat ), priority=10   , match=(ip &&
> flags.unsnat_new == 1), action=(next;)
> > > +])
> > > +
> > > +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.trk || !ct.rpl) && flags.unsnat_new == 1),
> action=(ct_commit_to_zone(snat);)
> > > +  table=??(lr_out_snat        ), priority=10   , match=(ip && ct.new
> && flags.unsnat_not_tracked == 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);)
> > > +])
> > > +
> > > +# Disable commit all for the router
> > > +check ovn-nbctl remove logical_router lr0 options ct-commit-all
> > > +check ovn-nbctl --wait=sb sync
> > > +
> > > +ovn-sbctl dump-flows lr0 > lr0flows
> > > +AT_CAPTURE_FILE([lr0flows])
> > > +
> > > +AT_CHECK([grep "lr_in_post_unsnat" lr0flows | ovn_strip_lflows], [0],
> [dnl
> > > +  table=??(lr_in_post_unsnat  ), priority=0    , match=(1),
> action=(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=100  , match=(ip && ip4.dst
> == 172.168.0.100), 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=120  , match=(ct.new &&
> !ct.rel && ip4 && ip4.dst == 172.168.0.100 && tcp && tcp.dst == 8082),
> action=(ct_lb_mark(backends=10.0.0.50:82,10.0.0.60:82);)
> > > +  table=??(lr_in_dnat         ), priority=50   , match=(ct.est &&
> !ct.rel && !ct.new && !ct.rpl && ct_mark.natted), action=(next;)
> > > +  table=??(lr_in_dnat         ), priority=50   , match=(ct.rel &&
> !ct.est && !ct.new && !ct.rpl), action=(ct_commit_nat;)
> > > +  table=??(lr_in_dnat         ), priority=70   , match=(ct.est &&
> !ct.rel && !ct.new && !ct.rpl && ct_mark.natted && ct_mark.force_snat ==
> 1), action=(flags.force_snat_for_lb = 1; next;)
> > > +  table=??(lr_in_dnat         ), priority=70   , match=(ct.est &&
> !ct.rel && !ct.new && !ct.rpl && ct_mark.natted && ct_mark.skip_snat == 1),
> action=(flags.skip_snat_for_lb = 1; next;)
> > > +  table=??(lr_in_dnat         ), priority=70   , match=(ct.rel &&
> !ct.est && !ct.new && !ct.rpl && ct_mark.force_snat == 1),
> action=(flags.force_snat_for_lb = 1; ct_commit_nat;)
> > > +  table=??(lr_in_dnat         ), priority=70   , match=(ct.rel &&
> !ct.est && !ct.new && !ct.rpl && ct_mark.skip_snat == 1),
> action=(flags.skip_snat_for_lb = 1; ct_commit_nat;)
> > > +])
> > > +
> > > +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; )
> > > +])
> > > +
> > > +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=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);)
> > > +])
> > > +
> > > +AT_CLEANUP
> > > +])
> > > diff --git a/tests/system-ovn-kmod.at b/tests/system-ovn-kmod.at
> > > index f7745b979..9ba631ecc 100644
> > > --- a/tests/system-ovn-kmod.at
> > > +++ b/tests/system-ovn-kmod.at
> > > @@ -1172,3 +1172,559 @@ OVS_TRAFFIC_VSWITCHD_STOP(["/failed to query
> port patch-.*/d
> > >   /connection dropped.*/d"])
> > >   AT_CLEANUP
> > >   ])
> > > +
> > > +OVN_FOR_EACH_NORTHD([
> > > +AT_SETUP([LR DGP - ct-commit-all])
> > > +AT_KEYWORDS([ovnnat])
> > > +
> > > +CHECK_CONNTRACK()
> > > +CHECK_CONNTRACK_NAT()
> > > +ovn_start
> > > +OVS_TRAFFIC_VSWITCHD_START()
> > > +ADD_BR([br-int])
> > > +
> > > +# Set external-ids in br-int needed for ovn-controller
> > > +ovs-vsctl \
> > > +        -- set Open_vSwitch . external-ids:system-id=hv1 \
> > > +        -- set Open_vSwitch .
> external-ids:ovn-remote=unix:$ovs_base/ovn-sb/ovn-sb.sock \
> > > +        -- set Open_vSwitch . external-ids:ovn-encap-type=geneve \
> > > +        -- set Open_vSwitch . external-ids:ovn-encap-ip=169.0.0.1 \
> > > +        -- set bridge br-int fail-mode=secure
> other-config:disable-in-band=true
> > > +
> > > +# Start ovn-controller
> > > +start_daemon ovn-controller
> > > +
> > > +# Logical network:
> > > +# One LR R1 with switches foo (192.168.1.0/24 fd11::/64), bar (
> 192.168.2.0/24 fd12::/64),
> > > +# and alice (172.16.1.0/24 fd20::/64) connected to it.  The port
> between R1 and
> > > +# alice is the router gateway port where the R1 NAT rules are applied.
> > > +#
> > > +#    foo -- R1 -- alice
> > > +#           |
> > > +#    bar ----
> > > +
> > > +check ovn-nbctl lr-add R1
> > > +check ovn-nbctl set logical_router R1 options:ct-commit-all="true"
> > > +
> > > +check ovn-nbctl ls-add foo
> > > +check ovn-nbctl ls-add bar
> > > +check ovn-nbctl ls-add alice
> > > +
> > > +check ovn-nbctl lrp-add R1 foo 00:00:01:01:02:03 192.168.1.1/24
> fd11::1/64
> > > +check ovn-nbctl lrp-add R1 bar 00:00:01:01:02:04 192.168.2.1/24
> fd12::1/64
> > > +check ovn-nbctl lrp-add R1 alice 00:00:02:01:02:03 172.16.1.1/24
> fd20::1/64 \
> > > +    -- lrp-set-gateway-chassis alice hv1
> > > +
> > > +# Connect foo to R1
> > > +check ovn-nbctl lsp-add foo rp-foo -- set Logical_Switch_Port rp-foo \
> > > +    type=router options:router-port=foo \
> > > +    -- lsp-set-addresses rp-foo router
> > > +
> > > +# Connect bar to R1
> > > +check ovn-nbctl lsp-add bar rp-bar -- set Logical_Switch_Port rp-bar \
> > > +    type=router options:router-port=bar \
> > > +    -- lsp-set-addresses rp-bar router
> > > +
> > > +# Connect alice to R1
> > > +check ovn-nbctl lsp-add alice rp-alice -- set Logical_Switch_Port
> rp-alice \
> > > +    type=router options:router-port=alice \
> > > +    -- lsp-set-addresses rp-alice router
> > > +
> > > +# Logical port 'foo1' in switch 'foo'.
> > > +ADD_NAMESPACES(foo1)
> > > +ADD_VETH(foo1, foo1, br-int, "fd11::2", "f0:00:00:01:02:03", \
> > > +         "fd11::1", "nodad", "192.168.1.2/24", "192.168.1.1")
> > > +check ovn-nbctl lsp-add foo foo1 \
> > > +-- lsp-set-addresses foo1 "f0:00:00:01:02:03 192.168.1.2 fd11::2"
> > > +
> > > +# Logical port 'foo2' in switch 'foo'.
> > > +ADD_NAMESPACES(foo2)
> > > +ADD_VETH(foo2, foo2, br-int, "fd11::3/64", "f0:00:00:01:02:06", \
> > > +         "fd11::1", "nodad", "192.168.1.3/24", "192.168.1.1")
> > > +check ovn-nbctl lsp-add foo foo2 \
> > > +-- lsp-set-addresses foo2 "f0:00:00:01:02:06 192.168.1.3 fd11::3"
> > > +
> > > +# Logical port 'bar1' in switch 'bar'.
> > > +ADD_NAMESPACES(bar1)
> > > +ADD_VETH(bar1, bar1, br-int, "fd12::2/64", "f0:00:00:01:02:04", \
> > > +         "fd12::1", "nodad", "192.168.2.2/24", "192.168.2.1")
> > > +check ovn-nbctl lsp-add bar bar1 \
> > > +-- lsp-set-addresses bar1 "f0:00:00:01:02:04 192.168.2.2 fd12::2"
> > > +
> > > +# Logical port 'alice1' in switch 'alice'.
> > > +ADD_NAMESPACES(alice1)
> > > +ADD_VETH(alice1, alice1, br-int, "fd20::2/64", "f0:00:00:01:02:05", \
> > > +         "fd20::1", "nodad", "172.16.1.2/24", "172.16.1.1")
> > > +check ovn-nbctl lsp-add alice alice1 \
> > > +-- lsp-set-addresses alice1 "f0:00:00:01:02:05 172.16.1.2 fd20::2"
> > > +
> > > +# Add DNAT and SNAT rules
> > > +check ovn-nbctl lr-nat-add R1 dnat_and_snat 172.16.1.3 192.168.1.2
> foo1 00:00:02:02:03:04
> > > +check ovn-nbctl lr-nat-add R1 dnat_and_snat 172.16.1.4 192.168.2.2
> bar1 00:00:02:02:03:05
> > > +check ovn-nbctl lr-nat-add R1 dnat_and_snat fd20::3 fd11::2 foo1
> 00:00:02:02:03:04
> > > +check ovn-nbctl lr-nat-add R1 dnat_and_snat fd20::4 fd12::2 bar1
> 00:00:02:02:03:05
> > > +
> > > +# Add a SNAT rule
> > > +check ovn-nbctl lr-nat-add R1 snat 172.16.1.1 192.168.1.0/24
> > > +check ovn-nbctl lr-nat-add R1 snat fd20::1 fd11::/64
> > > +
> > > +check ovn-nbctl --wait=hv sync
> > > +OVS_WAIT_UNTIL([ovs-ofctl dump-flows br-int | grep
> 'nat(src=172.16.1.1)'])
> > > +OVS_WAIT_UNTIL([ovs-ofctl dump-flows br-int | grep
> 'nat(src=fd20::1)'])
> > > +
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > > +NS_CHECK_EXEC([alice1], [ping -q -c 3 -i 0.3 -w 2 192.168.2.2 |
> FORMAT_PING], \
> > > +[0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +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=172.16.1.2,dst=192.168.2.2,id=<cleared>,type=8,code=0),reply=(src=192.168.2.2,dst=172.16.1.2,id=<cleared>,type=0,code=0),zone=<cleared>
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > > +NS_CHECK_EXEC([alice1], [ping -q -c 3 -i 0.3 -w 2 fd12::2 |
> FORMAT_PING], \
> > > +[0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/dump-conntrack | grep icmp |
> FORMAT_CT(fd12::2) | \
> > > +sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> > >
> +icmpv6,orig=(src=fd20::2,dst=fd12::2,id=<cleared>,type=128,code=0),reply=(src=fd12::2,dst=fd20::2,id=<cleared>,type=129,code=0),zone=<cleared>
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > > +NS_CHECK_EXEC([bar1], [ping -q -c 3 -i 0.3 -w 2 172.16.1.2 |
> FORMAT_PING], \
> > > +[0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/dump-conntrack | grep icmp |
> FORMAT_CT(172.16.1.2) | \
> > > +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=172.16.1.2,dst=172.16.1.4,id=<cleared>,type=0,code=0),zone=<cleared>
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > > +NS_CHECK_EXEC([bar1], [ping -q -c 3 -i 0.3 -w 2 fd20::2 |
> FORMAT_PING], \
> > > +[0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/dump-conntrack | grep icmp |
> FORMAT_CT(fd20::2) | \
> > > +sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> > >
> +icmpv6,orig=(src=fd12::2,dst=fd20::2,id=<cleared>,type=128,code=0),reply=(src=fd20::2,dst=fd20::4,id=<cleared>,type=129,code=0),zone=<cleared>
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > > +# East-West NAT: 'foo1' pings 'bar1' using 172.16.1.4.
> > > +NS_CHECK_EXEC([foo1], [ping -q -c 3 -i 0.3 -w 2 172.16.1.4 |
> FORMAT_PING], \
> > > +[0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +# Check conntrack entries.
> > > +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>
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > > +NS_CHECK_EXEC([foo1], [ping -q -c 3 -i 0.3 -w 2 fd20::4 |
> FORMAT_PING], [0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +# Check conntrack entries.  First SNAT of 'foo1' address happens.
> > > +# 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=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>
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > > +NS_CHECK_EXEC([foo2], [ping -q -c 3 -i 0.3 -w 2 172.16.1.4 |
> FORMAT_PING], [0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +# Check conntrack entries.
> > > +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=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>
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > > +# East-West NAT: 'foo2' pings 'bar1' using fd20::4.
> > > +NS_CHECK_EXEC([foo2], [ping -q -c 3 -i 0.3 -w 2 fd20::4 |
> FORMAT_PING], [0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +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=fd20::4,id=<cleared>,type=128,code=0),reply=(src=fd12::2,dst=fd20::1,id=<cleared>,type=129,code=0),zone=<cleared>
> > > +])
> > > +
> > > +OVS_APP_EXIT_AND_WAIT([ovn-controller])
> > > +
> > > +as ovn-sb
> > > +OVS_APP_EXIT_AND_WAIT([ovsdb-server])
> > > +
> > > +as ovn-nb
> > > +OVS_APP_EXIT_AND_WAIT([ovsdb-server])
> > > +
> > > +as northd
> > > +OVS_APP_EXIT_AND_WAIT([ovn-northd])
> > > +
> > > +as
> > > +OVS_TRAFFIC_VSWITCHD_STOP(["/failed to query port patch-.*/d
> > > +/connection dropped.*/d"])
> > > +AT_CLEANUP
> > > +])
> > > +
> > > +OVN_FOR_EACH_NORTHD([
> > > +AT_SETUP([LR GW router - ct-commit-all])
> > > +AT_KEYWORDS([ovnnat])
> > > +
> > > +CHECK_CONNTRACK()
> > > +CHECK_CONNTRACK_NAT()
> > > +ovn_start
> > > +OVS_TRAFFIC_VSWITCHD_START()
> > > +ADD_BR([br-int])
> > > +
> > > +# Set external-ids in br-int needed for ovn-controller
> > > +ovs-vsctl \
> > > +        -- set Open_vSwitch . external-ids:system-id=hv1 \
> > > +        -- set Open_vSwitch .
> external-ids:ovn-remote=unix:$ovs_base/ovn-sb/ovn-sb.sock \
> > > +        -- set Open_vSwitch . external-ids:ovn-encap-type=geneve \
> > > +        -- set Open_vSwitch . external-ids:ovn-encap-ip=169.0.0.1 \
> > > +        -- set bridge br-int fail-mode=secure
> other-config:disable-in-band=true
> > > +
> > > +# Start ovn-controller
> > > +start_daemon ovn-controller
> > > +
> > > +# Logical network:
> > > +# One LR R1 with switches foo (192.168.1.0/24 fd11::/64), bar (
> 192.168.2.0/24 fd12::/64),
> > > +# and alice (172.16.1.0/24 fd20::/64) connected to it.  The port
> between R1 and
> > > +# alice is the router gateway port where the R1 NAT rules are applied.
> > > +#
> > > +#    foo -- R1 -- alice
> > > +#           |
> > > +#    bar ----
> > > +
> > > +check ovn-nbctl lr-add R1
> > > +check ovn-nbctl set logical_router R1 options:ct-commit-all="true"
> > > +
> > > +check ovn-nbctl ls-add foo
> > > +check ovn-nbctl ls-add bar
> > > +check ovn-nbctl ls-add alice
> > > +
> > > +check ovn-nbctl lrp-add R1 foo 00:00:01:01:02:03 192.168.1.1/24
> fd11::1/64
> > > +check ovn-nbctl lrp-add R1 bar 00:00:01:01:02:04 192.168.2.1/24
> fd12::1/64
> > > +check ovn-nbctl lrp-add R1 alice 00:00:02:01:02:03 172.16.1.1/24
> fd20::1/64 \
> > > +    -- set logical_router R1 options:chassis="hv1"
> > > +
> > > +# Connect foo to R1
> > > +check ovn-nbctl lsp-add foo rp-foo -- set Logical_Switch_Port rp-foo \
> > > +    type=router options:router-port=foo \
> > > +    -- lsp-set-addresses rp-foo router
> > > +
> > > +# Connect bar to R1
> > > +check ovn-nbctl lsp-add bar rp-bar -- set Logical_Switch_Port rp-bar \
> > > +    type=router options:router-port=bar \
> > > +    -- lsp-set-addresses rp-bar router
> > > +
> > > +# Connect alice to R1
> > > +check ovn-nbctl lsp-add alice rp-alice -- set Logical_Switch_Port
> rp-alice \
> > > +    type=router options:router-port=alice \
> > > +    -- lsp-set-addresses rp-alice router
> > > +
> > > +# Logical port 'foo1' in switch 'foo'.
> > > +ADD_NAMESPACES(foo1)
> > > +ADD_VETH(foo1, foo1, br-int, "fd11::2", "f0:00:00:01:02:03", \
> > > +         "fd11::1", "nodad", "192.168.1.2/24", "192.168.1.1")
> > > +check ovn-nbctl lsp-add foo foo1 \
> > > +-- lsp-set-addresses foo1 "f0:00:00:01:02:03 192.168.1.2 fd11::2"
> > > +
> > > +# Logical port 'foo2' in switch 'foo'.
> > > +ADD_NAMESPACES(foo2)
> > > +ADD_VETH(foo2, foo2, br-int, "fd11::3/64", "f0:00:00:01:02:06", \
> > > +         "fd11::1", "nodad", "192.168.1.3/24", "192.168.1.1")
> > > +check ovn-nbctl lsp-add foo foo2 \
> > > +-- lsp-set-addresses foo2 "f0:00:00:01:02:06 192.168.1.3 fd11::3"
> > > +
> > > +# Logical port 'bar1' in switch 'bar'.
> > > +ADD_NAMESPACES(bar1)
> > > +ADD_VETH(bar1, bar1, br-int, "fd12::2/64", "f0:00:00:01:02:04", \
> > > +         "fd12::1", "nodad", "192.168.2.2/24", "192.168.2.1")
> > > +check ovn-nbctl lsp-add bar bar1 \
> > > +-- lsp-set-addresses bar1 "f0:00:00:01:02:04 192.168.2.2 fd12::2"
> > > +
> > > +# Logical port 'alice1' in switch 'alice'.
> > > +ADD_NAMESPACES(alice1)
> > > +ADD_VETH(alice1, alice1, br-int, "fd20::2/64", "f0:00:00:01:02:05", \
> > > +         "fd20::1", "nodad", "172.16.1.2/24", "172.16.1.1")
> > > +check ovn-nbctl lsp-add alice alice1 \
> > > +-- lsp-set-addresses alice1 "f0:00:00:01:02:05 172.16.1.2 fd20::2"
> > > +
> > > +# Add DNAT and SNAT rules
> > > +check ovn-nbctl lr-nat-add R1 dnat_and_snat 172.16.1.3 192.168.1.2
> foo1 00:00:02:02:03:04
> > > +check ovn-nbctl lr-nat-add R1 dnat_and_snat 172.16.1.4 192.168.2.2
> bar1 00:00:02:02:03:05
> > > +check ovn-nbctl lr-nat-add R1 dnat_and_snat fd20::3 fd11::2 foo1
> 00:00:02:02:03:04
> > > +check ovn-nbctl lr-nat-add R1 dnat_and_snat fd20::4 fd12::2 bar1
> 00:00:02:02:03:05
> > > +
> > > +# Add a SNAT rule
> > > +check ovn-nbctl lr-nat-add R1 snat 172.16.1.1 192.168.1.0/24
> > > +check ovn-nbctl lr-nat-add R1 snat fd20::1 fd11::/64
> > > +
> > > +check ovn-nbctl --wait=hv sync
> > > +OVS_WAIT_UNTIL([ovs-ofctl dump-flows br-int | grep
> 'nat(src=172.16.1.1)'])
> > > +OVS_WAIT_UNTIL([ovs-ofctl dump-flows br-int | grep
> 'nat(src=fd20::1)'])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > > +NS_CHECK_EXEC([foo1], [ping -q -c 3 -i 0.3 -w 2 192.168.2.2 |
> FORMAT_PING], \
> > > +[0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +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=172.16.1.3,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])
> > > +NS_CHECK_EXEC([foo1], [ping -q -c 3 -i 0.3 -w 2 fd12::2 |
> FORMAT_PING], \
> > > +[0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/dump-conntrack | grep icmp |
> FORMAT_CT(fd12::2) | \
> > > +sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> > >
> +icmpv6,orig=(src=fd11::2,dst=fd12::2,id=<cleared>,type=128,code=0),reply=(src=fd12::2,dst=fd11::2,id=<cleared>,type=129,code=0),zone=<cleared>
> > >
> +icmpv6,orig=(src=fd11::2,dst=fd12::2,id=<cleared>,type=128,code=0),reply=(src=fd12::2,dst=fd20::3,id=<cleared>,type=129,code=0),zone=<cleared>
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > > +NS_CHECK_EXEC([foo2], [ping -q -c 3 -i 0.3 -w 2 192.168.2.2 |
> FORMAT_PING], \
> > > +[0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +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=172.16.1.1,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])
> > > +NS_CHECK_EXEC([foo2], [ping -q -c 3 -i 0.3 -w 2 fd12::2 |
> FORMAT_PING], \
> > > +[0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/dump-conntrack | grep icmp |
> FORMAT_CT(fd12::2) | \
> > > +sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> > >
> +icmpv6,orig=(src=fd11::3,dst=fd12::2,id=<cleared>,type=128,code=0),reply=(src=fd12::2,dst=fd11::3,id=<cleared>,type=129,code=0),zone=<cleared>
> > >
> +icmpv6,orig=(src=fd11::3,dst=fd12::2,id=<cleared>,type=128,code=0),reply=(src=fd12::2,dst=fd20::1,id=<cleared>,type=129,code=0),zone=<cleared>
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > > +NS_CHECK_EXEC([bar1], [ping -q -c 3 -i 0.3 -w 2 192.168.1.3 |
> FORMAT_PING], \
> > > +[0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/dump-conntrack | grep icmp |
> FORMAT_CT(192.168.1.3) | \
> > > +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=172.16.1.4,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])
> > > +NS_CHECK_EXEC([bar1], [ping -q -c 3 -i 0.3 -w 2 fd11::3 |
> FORMAT_PING], \
> > > +[0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/dump-conntrack | grep icmp |
> FORMAT_CT(fd11::3) | \
> > > +sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> > >
> +icmpv6,orig=(src=fd12::2,dst=fd11::3,id=<cleared>,type=128,code=0),reply=(src=fd11::3,dst=fd12::2,id=<cleared>,type=129,code=0),zone=<cleared>
> > >
> +icmpv6,orig=(src=fd12::2,dst=fd11::3,id=<cleared>,type=128,code=0),reply=(src=fd11::3,dst=fd20::4,id=<cleared>,type=129,code=0),zone=<cleared>
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > > +NS_CHECK_EXEC([foo1], [ping -q -c 3 -i 0.3 -w 2 172.16.1.4 |
> FORMAT_PING], \
> > > +[0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +# Check conntrack entries.
> > > +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=192.168.1.2,dst=172.16.1.4,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/dump-conntrack | grep icmp |
> FORMAT_CT(172.16.1.3) | \
> > > +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=172.16.1.3,id=<cleared>,type=0,code=0),zone=<cleared>
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > > +NS_CHECK_EXEC([foo1], [ping -q -c 3 -i 0.3 -w 2 fd20::4 |
> FORMAT_PING], [0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +# Check conntrack entries.
> > > +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=fd12::2,dst=fd11::2,id=<cleared>,type=129,code=0),zone=<cleared>
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(fd20::3) | \
> > > +sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> > >
> +icmpv6,orig=(src=fd11::2,dst=fd12::2,id=<cleared>,type=128,code=0),reply=(src=fd12::2,dst=fd20::3,id=<cleared>,type=129,code=0),zone=<cleared>
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > > +# East-West NAT: 'foo2' pings 'bar1' using 172.16.1.4.
> > > +NS_CHECK_EXEC([foo2], [ping -q -c 3 -i 0.3 -w 2 172.16.1.4 |
> FORMAT_PING], [0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +# Check conntrack entries.
> > > +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=192.168.1.3,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>
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(172.16.1.4) | \
> > > +sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
> > >
> +icmp,orig=(src=192.168.1.3,dst=172.16.1.4,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])
> > > +# East-West NAT: 'foo2' pings 'bar1' using fd20::4.
> > > +NS_CHECK_EXEC([foo2], [ping -q -c 3 -i 0.3 -w 2 fd20::4 |
> FORMAT_PING], [0], [dnl
> > > +3 packets transmitted, 3 received, 0% packet loss, time 0ms
> > > +])
> > > +
> > > +# Check conntrack entries.
> > > +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=fd12::2,id=<cleared>,type=128,code=0),reply=(src=fd12::2,dst=fd20::1,id=<cleared>,type=129,code=0),zone=<cleared>
> > > +])
> > > +
> > > +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::3,dst=fd20::4,id=<cleared>,type=128,code=0),reply=(src=fd12::2,dst=fd11::3,id=<cleared>,type=129,code=0),zone=<cleared>
> > > +])
> > > +
> > > +OVS_APP_EXIT_AND_WAIT([ovn-controller])
> > > +
> > > +as ovn-sb
> > > +OVS_APP_EXIT_AND_WAIT([ovsdb-server])
> > > +
> > > +as ovn-nb
> > > +OVS_APP_EXIT_AND_WAIT([ovsdb-server])
> > > +
> > > +as northd
> > > +OVS_APP_EXIT_AND_WAIT([ovn-northd])
> > > +
> > > +as
> > > +OVS_TRAFFIC_VSWITCHD_STOP(["/failed to query port patch-.*/d
> > > +/connection dropped.*/d"])
> > > +AT_CLEANUP
> > > +])
> > > +
> > > +OVN_FOR_EACH_NORTHD([
> > > +AT_SETUP([Commit all - UDN])
> > > +AT_KEYWORDS([ovnnat])
> > > +
> > > +CHECK_CONNTRACK()
> > > +CHECK_CONNTRACK_NAT()
> > > +ovn_start
> > > +OVS_TRAFFIC_VSWITCHD_START()
> > > +ADD_BR([br-int])
> > > +
> > > +# Set external-ids in br-int needed for ovn-controller
> > > +check ovs-vsctl \
> > > +        -- set Open_vSwitch . external-ids:system-id=hv1 \
> > > +        -- set Open_vSwitch .
> external-ids:ovn-remote=unix:$ovs_base/ovn-sb/ovn-sb.sock \
> > > +        -- set Open_vSwitch . external-ids:ovn-encap-type=geneve \
> > > +        -- set Open_vSwitch . external-ids:ovn-encap-ip=169.0.0.1 \
> > > +        -- set bridge br-int fail-mode=secure
> other-config:disable-in-band=true
> > > +
> > > +# Start ovn-controller
> > > +start_daemon ovn-controller
> > > +
> > > +check ovn-nbctl lr-add lr
> > > +check ovn-nbctl ls-add ls
> > > +
> > > +check ovn-nbctl lrp-add lr lr-ls 00:00:00:00:00:01 192.168.100.1/24 \
> > > +    -- lrp-set-gateway-chassis lr-ls hv1
> > > +check ovn-nbctl lsp-add ls ls-lr -- set Logical_Switch_Port ls-lr \
> > > +    type=router options:router-port=lr-ls \
> > > +    -- lsp-set-addresses ls-lr router
> > > +
> > > +ADD_NAMESPACES(pod)
> > > +ADD_VETH(pod, pod, br-int, "192.168.100.5/24", "00:00:00:00:00:05",
> "192.168.100.1")
> > > +check ovn-nbctl lsp-add ls pod \
> > > +    -- lsp-set-addresses pod "00:00:00:00:00:05 192.168.100.5"
> > > +
> > > +ADD_NAMESPACES(mgmt)
> > > +ADD_VETH(mgmt, mgmt, br-int, "192.168.100.2/24",
> "00:00:00:00:00:02", "192.168.100.1")
> > > +NS_EXEC([mgmt], [ip addr add 172.16.100.2/24 dev mgmt])
> > > +check ovn-nbctl lsp-add ls mgmt \
> > > +    -- lsp-set-addresses mgmt "00:00:00:00:00:02 192.168.100.2"
> > > +
> > > +check check ovn-nbctl --policy="src-ip" lr-route-add lr
> 192.168.100.0/24 192.168.100.2
> > > +check ovn-nbctl lb-add lb0 172.16.0.5:5656 192.168.100.5:2323 udp
> > > +check ovn-nbctl lb-add lb1 172.16.0.5:5657 192.168.100.5:2324 tcp
> > > +check ovn-nbctl ls-lb-add ls lb0
> > > +check ovn-nbctl ls-lb-add ls lb1
> > > +
> > > +check ovn-nbctl --match="eth.dst == 00:00:00:00:00:02" lr-nat-add lr
> snat 172.16.0.2 192.168.100.0/24
> > > +check ovn-nbctl set logical_router lr options:ct-commit-all="true"
> > > +
> > > +wait_for_ports_up
> > > +check ovn-nbctl --wait=hv sync
> > > +
> > > +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
> > > +
> > > +NETNS_START_TCPDUMP([mgmt], [-vnne "ip or icmp"], [mgmt])
> > > +NETNS_START_TCPDUMP([pod], [-vnne "ip or icmp"], [pod])
> > > +
> > > +echo -e "Hello UDP\nHello UDP" > udp.expected
> > > +echo -e "Hello TCP\nHello TCP" > tcp.expected
> > > +
> > > +NETNS_DAEMONIZE([pod], [nc -e /bin/cat -v -l -u -o server_udp.log
> 192.168.100.5 2323], [nc1.pid])
> > > +NETNS_DAEMONIZE([pod], [nc -e /bin/cat -v -l -o server_tcp.log
> 192.168.100.5 2324], [nc2.pid])
> > > +
> > > +NS_CHECK_EXEC([mgmt], [(echo "Hello UDP"; sleep 3) | nc -u -s
> 172.16.100.2 -o client_udp.log 172.16.0.5 5656], [0], [ignore], [ignore])
> > > +check cmp server_udp.log udp.expected
> > > +check cmp client_udp.log udp.expected
> > > +
> > > +NS_CHECK_EXEC([mgmt], [(echo "Hello TCP"; sleep 3) | nc -s
> 172.16.100.2 -o client_tcp.log 172.16.0.5 5657], [0], [ignore], [ignore])
> > > +check cmp server_tcp.log tcp.expected
> > > +check cmp client_tcp.log tcp.expected
> > > +
> > > +OVS_APP_EXIT_AND_WAIT([ovn-controller])
> > > +
> > > +as ovn-sb
> > > +OVS_APP_EXIT_AND_WAIT([ovsdb-server])
> > > +
> > > +as ovn-nb
> > > +OVS_APP_EXIT_AND_WAIT([ovsdb-server])
> > > +
> > > +as northd
> > > +OVS_APP_EXIT_AND_WAIT([ovn-northd])
> > > +
> > > +as
> > > +OVS_TRAFFIC_VSWITCHD_STOP(["/failed to query port patch-.*/d
> > > +/connection dropped.*/d"])
> > > +AT_CLEANUP
> > > +])
> >
>

I also went ahead and added both acks to v6, as there is only
documentation/commit message change.

Thanks,
Ales
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