On 4/27/26 3:50 PM, Lorenzo Bianconi wrote:
>> In the OVN logical switch pipeline, broadcast ARP requests (and ND_NS)
>> generated by VIFs and by router ports are also flooded into the per switch
>> MC_FLOOD_L2 multicast group which includes all non-router ports of the
>> switch.
>> In deployments with large logical broadcast domains (logical switches with
>> a significantly large number of switch ports, e.g. 200+) this becomes a
>> problem because the MC_FLOOD_L2 multicast group has a lot of ports so the
>> chain of the OpenFlow tables that the packet needs to traverse for full
>> processing becomes really long, going over OVS' 4K resubmit limit and
>> causing the packet to be dropped.
>> The main reason why the ARP packets are currently sent to all non-router
>> ports is to allow the workloads to learn the mapping between arp.spa
>> (source IP) and arp.sha (source MAC). However, that's just an optimization,
>> which might avoid future ARP requests from other workloads; and it's not a
>> requirement, nothing would really break if we didn't forward those packets
>> to all other VIFs.
>> It's probably acceptable to change the behavior and just forward these ARP
>> requests to the ports that have LSP.addresses="unknown" as the workloads
>> behind those ports (or the fabric for the localnet case) might actually own
>> the arp.tpa target IP.
>>
>> Reported-at: https://redhat.atlassian.net/browse/FDP-3439
>> Co-authored-by: Dumitru Ceara <[email protected]>
>> Signed-off-by: Dumitru Ceara <[email protected]>
> 
> @Dumitru: I kept your SoB here but I was not sure about it. Please let me know
> if you are fine or not with it.
> 

Hi Lorenzo,

I guess that's fine.  I do have some comments below.

> Regards,
> Lorenzo
> 
>> Signed-off-by: Lorenzo Bianconi <[email protected]>
>> ---
>> Changes since v1:
>> - Add dedicated GARP management
>> - Do not skip any unit-test
>> ---
>>  northd/northd.c         |  25 +++++-
>>  northd/ovn-northd.8.xml |  14 ++-
>>  ovs                     |   2 +-
>>  tests/ovn-northd.at     | 192 +++++++++++++++++++++++++---------------
>>  tests/ovn.at            |  38 ++++----
>>  5 files changed, 173 insertions(+), 98 deletions(-)
>>
>> diff --git a/northd/northd.c b/northd/northd.c
>> index 0b52db6cf..e606365c6 100644
>> --- a/northd/northd.c
>> +++ b/northd/northd.c
>> @@ -9583,6 +9583,7 @@ build_lswitch_rport_arp_req_flow(
>>  {
>>      struct ds match   = DS_EMPTY_INITIALIZER;
>>      struct ds m       = DS_EMPTY_INITIALIZER;
>> +    struct ds m_garp  = DS_EMPTY_INITIALIZER;
>>      struct ds actions = DS_EMPTY_INITIALIZER;
>>  
>>      arp_nd_ns_match(ips, addr_family, &m);
>> @@ -9604,16 +9605,27 @@ build_lswitch_rport_arp_req_flow(
>>                        patch_op->cr_port->json_key);
>>      }
>>  
>> +    if (addr_family == AF_INET) {
>> +        ds_clone(&m_garp, &match);
>> +        ds_put_format(&m_garp, " && arp.spa == %s", ips);
>> +    }
>> +
>>      /* Send a the packet to the router pipeline.  If the switch has 
>> non-router
>>       * ports then flood it there as well.
>>       */
>>      if (vector_len(&od->router_ports) != od->nbs->n_ports) {
>>          ds_put_format(&actions, "clone {outport = %s; output; }; "
>> -                                "outport = \""MC_FLOOD_L2"\"; output;",
>> +                                "outport = \""MC_UNKNOWN"\"; output;",
>>                        patch_op->json_key);
>>          ovn_lflow_add(lflows, od, S_SWITCH_IN_L2_LKUP, priority,
>>                        ds_cstr(&match), ds_cstr(&actions), lflow_ref,
>>                        WITH_HINT(stage_hint));
>> +        if (addr_family == AF_INET) {
>> +            ovn_lflow_add(lflows, od, S_SWITCH_IN_L2_LKUP, priority + 10,
>> +                          ds_cstr(&m_garp),
>> +                          "outport = \""MC_FLOOD_L2"\"; output;",
>> +                          lflow_ref, WITH_HINT(stage_hint));
>> +        }

What about IPv6 gratuitous NS?  Now those go to MC_UNKNOWN while they
used to go to MC_FLOOD_L2.  Do we need a similar change for IPv6 as you
do here for

>>      } else {
>>          ds_put_format(&actions, "outport = %s; output;", 
>> patch_op->json_key);
>>          ovn_lflow_add(lflows, od, S_SWITCH_IN_L2_LKUP, priority,
>> @@ -9628,11 +9640,17 @@ build_lswitch_rport_arp_req_flow(
>>          ds_clear(&actions);
>>          if (vector_len(&od->router_ports) != od->nbs->n_ports) {
>>              ds_put_format(&actions, "clone {outport = %s; output; }; "
>> -                                    "outport = \""MC_FLOOD_L2"\"; output;",
>> +                                    "outport = \""MC_UNKNOWN"\"; output;",
>>                            patch_op->cr_port->json_key);
>>              ovn_lflow_add(lflows, od, S_SWITCH_IN_L2_LKUP, priority,
>>                            ds_cstr(&match), ds_cstr(&actions), lflow_ref,
>>                            WITH_HINT(stage_hint));
>> +            if (addr_family == AF_INET) {
>> +                ovn_lflow_add(lflows, od, S_SWITCH_IN_L2_LKUP, priority + 
>> 10,
>> +                              ds_cstr(&m_garp),
>> +                              "outport = \""MC_FLOOD_L2"\"; output;",
>> +                              lflow_ref, WITH_HINT(stage_hint));
>> +            }
>>          } else {
>>              ds_put_format(&actions, "outport = %s; output;",
>>                            patch_op->cr_port->json_key);
>> @@ -9644,6 +9662,7 @@ build_lswitch_rport_arp_req_flow(
>>  
>>      ds_destroy(&m);
>>      ds_destroy(&match);
>> +    ds_destroy(&m_garp);
>>      ds_destroy(&actions);
>>  }
>>  
>> @@ -11061,7 +11080,7 @@ build_lswitch_destination_lookup_bmcast(struct 
>> ovn_datapath *od,
>>                         "broadcast-arps-to-all-routers", true)) {
>>          ovn_lflow_add(lflows, od, S_SWITCH_IN_L2_LKUP, 72,
>>                        "eth.mcast && (arp.op == 1 || nd_ns)",
>> -                      "outport = \""MC_FLOOD_L2"\"; output;",
>> +                      "outport = \""MC_UNKNOWN"\"; output;",
>>                        lflow_ref);
>>      }
>>  
>> diff --git a/northd/ovn-northd.8.xml b/northd/ovn-northd.8.xml
>> index 4d6370da6..75c17e75d 100644
>> --- a/northd/ovn-northd.8.xml
>> +++ b/northd/ovn-northd.8.xml
>> @@ -2346,6 +2346,14 @@ output;
>>          <ref table="IGMP_Group" db="OVN_Southbound"/> entries.
>>        </li>
>>  
>> +      <li>
>> +        Priority-95 flows for each IP address/VIP/NAT address owned by a
>> +        router port connected to the switch. These flows match GARP packets
>> +        for the specific IP addresses. Matched packets are forwarded to the
>> +        <code>MC_FLOOD_L2</code> multicast group which contains all 
>> non-router
>> +        logical ports.
>> +      </li>
>> +
>>        <li>
>>          Priority-90 flows that forward registered IP multicast traffic to
>>          their corresponding multicast group, which <code>ovn-northd</code>
>> @@ -2402,8 +2410,8 @@ output;
>>          router port connected to the switch. These flows match ARP requests
>>          and ND packets for the specific IP addresses.  Matched packets are
>>          forwarded only to the router that owns the IP address and to the
>> -        <code>MC_FLOOD_L2</code> multicast group which contains all 
>> non-router
>> -        logical ports.
>> +        <code>MC_UNKNOWN</code> multicast group which contains all enabled
>> +        logical ports that accept unknown destination packets.
>>        </li>
>>  
>>        <li>
>> @@ -2426,7 +2434,7 @@ output;
>>        <li>
>>          A priority-72 flow that outputs all ARP requests and ND NS (Neighbor
>>          Solicitation) packets with an Ethernet broadcast or multicast
>> -        <code>eth.dst</code> to the <code>MC_FLOOD_L2</code> multicast group
>> +        <code>eth.dst</code> to the <code>MC_UNKNOWN</code> multicast group
>>          if <code>other_config:broadcast-arps-to-all-routers=false</code>.
>>        </li>
>>  
>> diff --git a/ovs b/ovs
>> index bdb95cc19..6aefe1db3 160000
>> --- a/ovs
>> +++ b/ovs
>> @@ -1 +1 @@
>> -Subproject commit bdb95cc1920d4ab66fe062a9470eeb33a51d33e2
>> +Subproject commit 6aefe1db31e3df4e7b64c21f54a7287e4663e1e4
>> diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
>> index 1d7bd6c28..b66f36691 100644
>> --- a/tests/ovn-northd.at
>> +++ b/tests/ovn-northd.at
>> @@ -5867,8 +5867,9 @@ AT_CHECK([grep "ls_in_l2_lkup" ls1_lflows | 
>> ovn_strip_lflows], [0], [dnl
>>    table=??(ls_in_l2_lkup      ), priority=71   , match=(eth.mcast && ip), 
>> action=(outport = "_MC_flood_l2"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=72   , match=(eth.mcast && (nd_na 
>> || nd_rs || nd_ra)), action=(outport = "_MC_flood"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=75   , match=(eth.src == 
>> {00:00:00:00:01:01} && eth.dst == ff:ff:ff:ff:ff:ff && (arp.op == 1 || 
>> rarp.op == 3 || nd_ns)), action=(outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:101), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_flood_l2"; output;)

This is the IPv6 flow I mentioned above, now we'd only flood gratuitous
NS from this router port owned IPv6 address to MC_UNKNOWN, not to any
VIFs we might have in the system.

>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:101), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1 && arp.spa == 192.168.1.1), 
>> action=(outport = "_MC_flood_l2"; output;)
>>  ])
>>  
>>  ovn-sbctl lflow-list ls2 > ls2_lflows
>> @@ -5883,8 +5884,9 @@ AT_CHECK([grep "ls_in_l2_lkup" ls2_lflows | 
>> ovn_strip_lflows], [0], [dnl
>>    table=??(ls_in_l2_lkup      ), priority=71   , match=(eth.mcast && ip), 
>> action=(outport = "_MC_flood_l2"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=72   , match=(eth.mcast && (nd_na 
>> || nd_rs || nd_ra)), action=(outport = "_MC_flood"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=75   , match=(eth.src == 
>> {00:00:00:00:02:01} && eth.dst == ff:ff:ff:ff:ff:ff && (arp.op == 1 || 
>> rarp.op == 3 || nd_ns)), action=(outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.2.1), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:201), action=(clone {outport = 
>> "ls2-ro2"; output; }; outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.2.1), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:201), action=(clone {outport = 
>> "ls2-ro2"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.2.1 && arp.spa == 192.168.2.1), 
>> action=(outport = "_MC_flood_l2"; output;)
>>  ])
>>  
>>  AS_BOX([Adding some reachable NAT addresses])
>> @@ -5907,10 +5909,13 @@ AT_CHECK([grep "ls_in_l2_lkup" ls1_lflows | 
>> ovn_strip_lflows], [0], [dnl
>>    table=??(ls_in_l2_lkup      ), priority=71   , match=(eth.mcast && ip), 
>> action=(outport = "_MC_flood_l2"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=72   , match=(eth.mcast && (nd_na 
>> || nd_rs || nd_ra)), action=(outport = "_MC_flood"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=75   , match=(eth.src == 
>> {00:00:00:00:01:01} && eth.dst == ff:ff:ff:ff:ff:ff && (arp.op == 1 || 
>> rarp.op == 3 || nd_ns)), action=(outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:101), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:101), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.100 && arp.spa == 10.0.0.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.200 && arp.spa == 10.0.0.200), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1 && arp.spa == 192.168.1.1), 
>> action=(outport = "_MC_flood_l2"; output;)
>>  ])
>>  
>>  ovn-sbctl lflow-list ls2 > ls2_lflows
>> @@ -5925,10 +5930,13 @@ AT_CHECK([grep "ls_in_l2_lkup" ls2_lflows | 
>> ovn_strip_lflows], [0], [dnl
>>    table=??(ls_in_l2_lkup      ), priority=71   , match=(eth.mcast && ip), 
>> action=(outport = "_MC_flood_l2"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=72   , match=(eth.mcast && (nd_na 
>> || nd_rs || nd_ra)), action=(outport = "_MC_flood"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=75   , match=(eth.src == 
>> {00:00:00:00:02:01} && eth.dst == ff:ff:ff:ff:ff:ff && (arp.op == 1 || 
>> rarp.op == 3 || nd_ns)), action=(outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.2.1), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 20.0.0.100), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 20.0.0.200), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:201), action=(clone {outport = 
>> "ls2-ro2"; output; }; outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.2.1), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 20.0.0.100), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 20.0.0.200), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:201), action=(clone {outport = 
>> "ls2-ro2"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.2.1 && arp.spa == 192.168.2.1), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 20.0.0.100 && arp.spa == 20.0.0.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 20.0.0.200 && arp.spa == 20.0.0.200), 
>> action=(outport = "_MC_flood_l2"; output;)
>>  ])
>>  
>>  AS_BOX([Adding some unreachable NAT addresses])
>> @@ -5951,12 +5959,17 @@ AT_CHECK([grep "ls_in_l2_lkup" ls1_lflows | 
>> ovn_strip_lflows], [0], [dnl
>>    table=??(ls_in_l2_lkup      ), priority=71   , match=(eth.mcast && ip), 
>> action=(outport = "_MC_flood_l2"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=72   , match=(eth.mcast && (nd_na 
>> || nd_rs || nd_ra)), action=(outport = "_MC_flood"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=75   , match=(eth.src == 
>> {00:00:00:00:01:01} && eth.dst == ff:ff:ff:ff:ff:ff && (arp.op == 1 || 
>> rarp.op == 3 || nd_ns)), action=(outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:101), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:101), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.100 && arp.spa == 10.0.0.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.200 && arp.spa == 10.0.0.200), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1 && arp.spa == 192.168.1.1), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.100 && arp.spa == 30.0.0.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.200 && arp.spa == 30.0.0.200), 
>> action=(outport = "_MC_flood_l2"; output;)
>>  ])
>>  
>>  ovn-sbctl lflow-list ls2 > ls2_lflows
>> @@ -5971,12 +5984,17 @@ AT_CHECK([grep "ls_in_l2_lkup" ls2_lflows | 
>> ovn_strip_lflows], [0], [dnl
>>    table=??(ls_in_l2_lkup      ), priority=71   , match=(eth.mcast && ip), 
>> action=(outport = "_MC_flood_l2"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=72   , match=(eth.mcast && (nd_na 
>> || nd_rs || nd_ra)), action=(outport = "_MC_flood"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=75   , match=(eth.src == 
>> {00:00:00:00:02:01} && eth.dst == ff:ff:ff:ff:ff:ff && (arp.op == 1 || 
>> rarp.op == 3 || nd_ns)), action=(outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.2.1), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 20.0.0.100), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 20.0.0.200), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 40.0.0.100), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 40.0.0.200), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:201), action=(clone {outport = 
>> "ls2-ro2"; output; }; outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.2.1), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 20.0.0.100), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 20.0.0.200), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 40.0.0.100), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 40.0.0.200), action=(clone {outport = "ls2-ro2"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:201), action=(clone {outport = 
>> "ls2-ro2"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.2.1 && arp.spa == 192.168.2.1), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 20.0.0.100 && arp.spa == 20.0.0.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 20.0.0.200 && arp.spa == 20.0.0.200), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 40.0.0.100 && arp.spa == 40.0.0.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 40.0.0.200 && arp.spa == 40.0.0.200), 
>> action=(outport = "_MC_flood_l2"; output;)
>>  ])
>>  
>>  AS_BOX([Adding load balancer reachable VIPs to ro1])
>> @@ -5996,13 +6014,19 @@ AT_CHECK([grep "ls_in_l2_lkup" ls1_lflows | 
>> ovn_strip_lflows], [0], [dnl
>>    table=??(ls_in_l2_lkup      ), priority=71   , match=(eth.mcast && ip), 
>> action=(outport = "_MC_flood_l2"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=72   , match=(eth.mcast && (nd_na 
>> || nd_rs || nd_ra)), action=(outport = "_MC_flood"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=75   , match=(eth.src == 
>> {00:00:00:00:01:01} && eth.dst == ff:ff:ff:ff:ff:ff && (arp.op == 1 || 
>> rarp.op == 3 || nd_ns)), action=(outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.100), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:101), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.100), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:101), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.100 && arp.spa == 10.0.0.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.200 && arp.spa == 10.0.0.200), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1 && arp.spa == 192.168.1.1), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.100 && arp.spa == 192.168.1.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.100 && arp.spa == 30.0.0.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.200 && arp.spa == 30.0.0.200), 
>> action=(outport = "_MC_flood_l2"; output;)
>>  ])
>>  
>>  AS_BOX([Adding load balancer unreachable VIPs to ro1])
>> @@ -6020,13 +6044,19 @@ AT_CHECK([grep "ls_in_l2_lkup" ls1_lflows | 
>> ovn_strip_lflows], [0], [dnl
>>    table=??(ls_in_l2_lkup      ), priority=71   , match=(eth.mcast && ip), 
>> action=(outport = "_MC_flood_l2"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=72   , match=(eth.mcast && (nd_na 
>> || nd_rs || nd_ra)), action=(outport = "_MC_flood"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=75   , match=(eth.src == 
>> {00:00:00:00:01:01} && eth.dst == ff:ff:ff:ff:ff:ff && (arp.op == 1 || 
>> rarp.op == 3 || nd_ns)), action=(outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.100), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:101), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.100), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:101), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.100 && arp.spa == 10.0.0.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.200 && arp.spa == 10.0.0.200), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1 && arp.spa == 192.168.1.1), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.100 && arp.spa == 192.168.1.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.100 && arp.spa == 30.0.0.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.200 && arp.spa == 30.0.0.200), 
>> action=(outport = "_MC_flood_l2"; output;)
>>  ])
>>  
>>  # Make sure that there is no flow for VIP 192.168.4.100 as ro1-ls1 doesn't
>> @@ -6051,13 +6081,19 @@ AT_CHECK([grep "ls_in_l2_lkup" ls1_lflows | 
>> ovn_strip_lflows], [0], [dnl
>>    table=??(ls_in_l2_lkup      ), priority=71   , match=(eth.mcast && ip), 
>> action=(outport = "_MC_flood_l2"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=72   , match=(eth.mcast && (nd_na 
>> || nd_rs || nd_ra)), action=(outport = "_MC_flood"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=75   , match=(eth.src == 
>> {00:00:00:00:01:01} && eth.dst == ff:ff:ff:ff:ff:ff && (arp.op == 1 || 
>> rarp.op == 3 || nd_ns)), action=(outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.100), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:101), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.100), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.100), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.200), action=(clone {outport = "ls1-ro1"; 
>> output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:101), action=(clone {outport = 
>> "ls1-ro1"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.100 && arp.spa == 10.0.0.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 10.0.0.200 && arp.spa == 10.0.0.200), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.1 && arp.spa == 192.168.1.1), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 192.168.1.100 && arp.spa == 192.168.1.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.100 && arp.spa == 30.0.0.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 30.0.0.200 && arp.spa == 30.0.0.200), 
>> action=(outport = "_MC_flood_l2"; output;)
>>  ])
>>  
>>  
>> @@ -8066,17 +8102,17 @@ check ovn-nbctl lsp-add S1 S1-VIF
>>  check ovn-nbctl lsp-set-addresses S1-VIF "02:ac:10:01:00:02 unknown"
>>  check ovn-nbctl --wait=sb sync
>>  
>> -AT_CHECK([ovn-sbctl lflow-list S1 | grep ls_in_l2_lkup | grep -q 
>> 'match=(eth.mcast && (arp.op == 1 || nd_ns)), action=(outport = 
>> "_MC_flood_l2"; output;)'], [1])
>> +AT_CHECK([ovn-sbctl lflow-list S1 | grep ls_in_l2_lkup | grep -q 
>> 'match=(eth.mcast && (arp.op == 1 || nd_ns)), action=(outport = 
>> "_MC_unknown"; output;)'], [1])
>>  
>>  check ovn-nbctl --wait=sb set Logical_Switch S1 \
>>      other_config:broadcast-arps-to-all-routers=false
>>  
>> -AT_CHECK([ovn-sbctl lflow-list S1 | grep ls_in_l2_lkup | grep -q 
>> 'match=(eth.mcast && (arp.op == 1 || nd_ns)), action=(outport = 
>> "_MC_flood_l2"; output;)'], [0], [], [ignore])
>> +AT_CHECK([ovn-sbctl lflow-list S1 | grep ls_in_l2_lkup | grep -q 
>> 'match=(eth.mcast && (arp.op == 1 || nd_ns)), action=(outport = 
>> "_MC_unknown"; output;)'], [0], [], [ignore])
>>  
>>  check ovn-nbctl --wait=sb set Logical_Switch S1 \
>>      other_config:broadcast-arps-to-all-routers=true
>>  
>> -AT_CHECK([ovn-sbctl lflow-list S1 | grep ls_in_l2_lkup | grep -q 
>> 'match=(eth.mcast && (arp.op == 1 || nd_ns)), action=(outport = 
>> "_MC_flood_l2"; output;)'], [1])
>> +AT_CHECK([ovn-sbctl lflow-list S1 | grep ls_in_l2_lkup | grep -q 
>> 'match=(eth.mcast && (arp.op == 1 || nd_ns)), action=(outport = 
>> "_MC_unknown"; output;)'], [1])
>>  
>>  OVN_CLEANUP_NORTHD
>>  AT_CLEANUP
>> @@ -14356,11 +14392,15 @@ AT_CHECK([grep "ls_in_l2_lkup" publicflows | 
>> ovn_strip_lflows], [0], [dnl
>>    table=??(ls_in_l2_lkup      ), priority=71   , match=(eth.mcast && ip), 
>> action=(outport = "_MC_flood_l2"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=72   , match=(eth.mcast && (nd_na 
>> || nd_rs || nd_ra)), action=(outport = "_MC_flood"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=75   , match=(eth.src == 
>> {00:00:00:00:ff:02, 30:54:00:00:00:03} && eth.dst == ff:ff:ff:ff:ff:ff && 
>> (arp.op == 1 || rarp.op == 3 || nd_ns)), action=(outport = "_MC_flood_l2"; 
>> output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.10), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.100), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:ff02), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.10), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.100), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:ff02), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.10 && arp.spa == 172.168.0.10), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.100 && arp.spa == 172.168.0.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110 && arp.spa == 172.168.0.110), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120 && arp.spa == 172.168.0.120), 
>> action=(outport = "_MC_flood_l2"; output;)
>>  ])
>>  
>>  AT_CHECK([grep -Fe "172.168.0.110" -e "172.168.0.120" -e "10.0.0.3" -e 
>> "20.0.0.3" -e "30:54:00:00:00:03"  -e "sw0-port1" lr0flows | 
>> ovn_strip_lflows], [0], [dnl
>> @@ -14391,8 +14431,10 @@ AT_CHECK([grep -Fe "172.168.0.110" -e 
>> "172.168.0.120" -e "10.0.0.3" -e "20.0.0.3
>>  AT_CHECK([grep -Fe "172.168.0.110" -e "172.168.0.120" -e "10.0.0.3" -e 
>> "20.0.0.3" -e "30:54:00:00:00:03"  -e "sw0-port1" publicflows | 
>> ovn_strip_lflows | grep -v "reg0.*22"], [0], [dnl
>>    table=??(ls_in_l2_lkup      ), priority=50   , match=(eth.dst == 
>> 30:54:00:00:00:03 && is_chassis_resident("sw0-port1")), action=(outport = 
>> "public-lr0"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=75   , match=(eth.src == 
>> {00:00:00:00:ff:02, 30:54:00:00:00:03} && eth.dst == ff:ff:ff:ff:ff:ff && 
>> (arp.op == 1 || rarp.op == 3 || nd_ns)), action=(outport = "_MC_flood_l2"; 
>> output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110 && arp.spa == 172.168.0.110), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120 && arp.spa == 172.168.0.120), 
>> action=(outport = "_MC_flood_l2"; output;)
>>  ])
>>  }
>>  
>> @@ -14536,16 +14578,20 @@ AT_CHECK([grep "ls_in_l2_lkup" publicflows | 
>> ovn_strip_lflows], [0], [dnl
>>    table=??(ls_in_l2_lkup      ), priority=71   , match=(eth.mcast && ip), 
>> action=(outport = "_MC_flood_l2"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=72   , match=(eth.mcast && (nd_na 
>> || nd_rs || nd_ra)), action=(outport = "_MC_flood"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=75   , match=(eth.src == 
>> {00:00:00:00:ff:02, 30:54:00:00:00:03} && eth.dst == ff:ff:ff:ff:ff:ff && 
>> (arp.op == 1 || rarp.op == 3 || nd_ns)), action=(outport = "_MC_flood_l2"; 
>> output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.10 && 
>> !is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "cr-public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.10 && 
>> is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.100 && 
>> !is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "cr-public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.100 && 
>> is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110 && 
>> !is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "cr-public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110 && 
>> is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120 && 
>> !is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "cr-public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120 && 
>> is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:ff02 && 
>> !is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "cr-public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:ff02 && 
>> is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.10 && 
>> !is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "cr-public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.10 && 
>> is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.100 && 
>> !is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "cr-public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.100 && 
>> is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110 && 
>> !is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "cr-public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110 && 
>> is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120 && 
>> !is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "cr-public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120 && 
>> is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:ff02 && 
>> !is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "cr-public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> nd_ns && nd.target == fe80::200:ff:fe00:ff02 && 
>> is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.10 && 
>> is_chassis_resident("cr-public-lr0") && arp.spa == 172.168.0.10), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.100 && 
>> is_chassis_resident("cr-public-lr0") && arp.spa == 172.168.0.100), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110 && 
>> is_chassis_resident("cr-public-lr0") && arp.spa == 172.168.0.110), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120 && 
>> is_chassis_resident("cr-public-lr0") && arp.spa == 172.168.0.120), 
>> action=(outport = "_MC_flood_l2"; output;)
>>  ])
>>  
>>  AT_CHECK([grep -Fe "172.168.0.110" -e "172.168.0.120" -e "10.0.0.3" -e 
>> "20.0.0.3" -e "30:54:00:00:00:03"  -e "sw0-port1" lr0flows | 
>> ovn_strip_lflows], [0], [dnl
>> @@ -14570,10 +14616,12 @@ AT_CHECK([grep -Fe "172.168.0.110" -e 
>> "172.168.0.120" -e "10.0.0.3" -e "20.0.0.3
>>  AT_CHECK([grep -Fe "172.168.0.110" -e "172.168.0.120" -e "10.0.0.3" -e 
>> "20.0.0.3" -e "30:54:00:00:00:03"  -e "sw0-port1" publicflows | 
>> ovn_strip_lflows], [0], [dnl
>>    table=??(ls_in_l2_lkup      ), priority=50   , match=(eth.dst == 
>> 30:54:00:00:00:03 && is_chassis_resident("sw0-port1")), action=(outport = 
>> "public-lr0"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=75   , match=(eth.src == 
>> {00:00:00:00:ff:02, 30:54:00:00:00:03} && eth.dst == ff:ff:ff:ff:ff:ff && 
>> (arp.op == 1 || rarp.op == 3 || nd_ns)), action=(outport = "_MC_flood_l2"; 
>> output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110 && 
>> !is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "cr-public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110 && 
>> is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120 && 
>> !is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "cr-public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120 && 
>> is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110 && 
>> !is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "cr-public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110 && 
>> is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120 && 
>> !is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "cr-public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120 && 
>> is_chassis_resident("cr-public-lr0")), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110 && 
>> is_chassis_resident("cr-public-lr0") && arp.spa == 172.168.0.110), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120 && 
>> is_chassis_resident("cr-public-lr0") && arp.spa == 172.168.0.120), 
>> action=(outport = "_MC_flood_l2"; output;)
>>  ])
>>  }
>>  
>> @@ -14637,8 +14685,10 @@ AT_CHECK([grep -Fe "172.168.0.110" -e 
>> "172.168.0.120" -e "10.0.0.3" -e "20.0.0.3
>>  AT_CHECK([grep -Fe "172.168.0.110" -e "172.168.0.120" -e "10.0.0.3" -e 
>> "20.0.0.3" -e "30:54:00:00:00:03"  -e "sw0-port1" publicflows | 
>> ovn_strip_lflows], [0], [dnl
>>    table=??(ls_in_l2_lkup      ), priority=50   , match=(eth.dst == 
>> 30:54:00:00:00:03 && is_chassis_resident("sw0-port1")), action=(outport = 
>> "public-lr0"; output;)
>>    table=??(ls_in_l2_lkup      ), priority=75   , match=(eth.src == 
>> {00:00:00:00:ff:02, 30:54:00:00:00:03} && eth.dst == ff:ff:ff:ff:ff:ff && 
>> (arp.op == 1 || rarp.op == 3 || nd_ns)), action=(outport = "_MC_flood_l2"; 
>> output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> -  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=80   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120), action=(clone {outport = 
>> "public-lr0"; output; }; outport = "_MC_unknown"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.110 && arp.spa == 172.168.0.110), 
>> action=(outport = "_MC_flood_l2"; output;)
>> +  table=??(ls_in_l2_lkup      ), priority=90   , match=(flags[[1]] == 0 && 
>> arp.op == 1 && arp.tpa == 172.168.0.120 && arp.spa == 172.168.0.120), 
>> action=(outport = "_MC_flood_l2"; output;)
>>  ])
>>  
>>  OVN_CLEANUP_NORTHD
>> diff --git a/tests/ovn.at b/tests/ovn.at
>> index c0ae611bc..e0ab6fa0b 100644
>> --- a/tests/ovn.at
>> +++ b/tests/ovn.at
>> @@ -5192,7 +5192,7 @@ test_ip() {
>>  # SPA and TPA are each 8 hex digits.
>>  test_arp() {
>>      echo "$@"
>> -    local inport=$1 sha=$2 spa=$3 tpa=$4 reply_ha=$5
>> +    local inport=$1 sha=$2 spa=$3 tpa=$4 rip=$5 reply_ha=$6
>>      local request=$(fmt_pkt "Ether(dst='ff:ff:ff:ff:ff:ff', src='${sha}')/ \
>>                               ARP(hwsrc='${sha}', hwdst='ff:ff:ff:ff:ff:ff', 
>> psrc='${spa}', pdst='${tpa}')")
>>      hv=hv`vif_to_hv $inport`
>> @@ -5206,9 +5206,19 @@ test_arp() {
>>          for k in 1 2 3; do
>>              # 192.168.33.254 is configured to the switch patch port for 
>> lrp33,
>>              # so no ARP flooding expected for it.
>> -            if test $i$j$k != $inport && test $tpa != 192.168.33.254; then
>> -                echo $request >> $i$j$k.expected
>> +            if test $i$j$k = $inport; then
>> +                continue
>> +            fi
>> +
>> +            if test $tpa = 192.168.33.254; then
>> +                continue
>>              fi
>> +
>> +            if test $rip = $tpa && test $j$k != 11; then
>> +                continue
>> +            fi
>> +
>> +            echo $request >> $i$j$k.expected
>>          done
>>      done
>>  
>> @@ -5348,9 +5358,9 @@ for i in 1 2 3; do
>>        otherip=192.168.$i$j.55 # Some other IP in subnet
>>        externalip=1.2.3.4      # Some other IP not in subnet
>>  
>> -      test_arp $i$j$k $smac $sip        $rip        $rmac      #4
>> -      test_arp $i$j$k $smac $otherip    $rip        $rmac      #5
>> -      test_arp $i$j$k $smac $sip        $otherip               #6
>> +      test_arp $i$j$k $smac $sip        $rip        $rip    $rmac #4
>> +      test_arp $i$j$k $smac $otherip    $rip        $rip    $rmac #5
>> +      test_arp $i$j$k $smac $sip        $otherip    $rip          #6
>>  
>>        # When rip is 192.168.33.254, ARP request from externalip won't be
>>        # filtered, because 192.168.33.254 is configured to switch peer port
>> @@ -5359,9 +5369,9 @@ for i in 1 2 3; do
>>        if test $i = 3 && test $j = 3; then
>>          lrp33_rsp=$rmac
>>        fi
>> -      test_arp $i$j$k $smac $externalip $rip        $lrp33_rsp #7
>> +      test_arp $i$j$k $smac $externalip $rip $rip $lrp33_rsp #7
>>  
>> -      # MAC binding should be learned from ARP request.
>> +      ## MAC binding should be learned from ARP request.
>>        echo lrp$i$j,$sip,$smac >> mac_bindings.expected
>>  
>>        # mac_binding is learned and overwritten so only the last one remains.
>> @@ -27702,18 +27712,6 @@ for var in sw_dp_uuid sw_dp_key sw1_dp_key 
>> r1_dp_key r1_tnl_key r2_tnl_key \
>>     echo "$var=$value"
>>  done
>>  
>> -as hv1
>> -AT_CAPTURE_FILE([offlows])
>> -OVS_WAIT_FOR_OUTPUT([
>> -    ovs-ofctl dump-flows br-int > offlows
>> -    for match in "$match_send_rtr1" "$match_send_rtr2"; do
>> -        grep -E "$match_arp_req.*$match" offlows | grep -c 
>> 'n_packets=[[1-9]]'
>> -    done
>> -    :
>> -], [0], [1
>> -0
>> -])
>> -
>>  # Inject ND_NS for ofirst router owned IP address.
>>  src_ipv6=00100000000000000000000000000254
>>  dst_ipv6=00100000000000000000000000000001
>> -- 
>> 2.53.0
>>

Regards,
Dumitru

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