Since [0], external ARP request/reply processing is performed only
on the HA chassis.
In cases where the full processing of ARP request happens on chassis
that doesn't host DGP - ARP reply won't be received.
This happens for instance in the following setup, with vif1 and ext on hv1
and lr-pub on hv2.
vif1 --- ls1 --- lr --- pub -+- ln
+- ext
To fix this, the restrictions are now applied only to requests.
[0] 1b4058b9162c ("northd: Process external arps on ha chassis.")
Reported-at:
https://mail.openvswitch.org/pipermail/ovs-dev/2025-December/428133.html
Fixes: 1b4058b9162c ("northd: Process external arps on ha chassis.")
Signed-off-by: Alexandra Rukomoinikova <[email protected]>
---
northd/northd.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/northd/northd.c b/northd/northd.c
index ec219a0c7..8979d9ad6 100644
--- a/northd/northd.c
+++ b/northd/northd.c
@@ -9746,8 +9746,7 @@ build_lswitch_arp_chassis_resident(const struct
ovn_datapath *od,
SSET_FOR_EACH (port_name, &inports) {
ds_clear(&match);
- ds_put_format(&match, "(arp.op == 1 || arp.op == 2) "
- "&& inport == %s",
+ ds_put_format(&match, "arp.op == 1 && inport == %s",
port_name);
ovn_lflow_add(lflows, od, S_SWITCH_IN_CHECK_PORT_SEC, 75,
ds_cstr(&match), REGBIT_EXT_ARP " = 1; next;",
--
2.48.1
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