Hi,
Seems like ovs-discuss dropped for some reason previous message.
I'm finally back to investigate on this bug...

Some refs:
-https://mail.openvswitch.org/pipermail/ovs-discuss/2025-April/053578.html 
(related)
-https://mail.openvswitch.org/pipermail/ovs-discuss/2025-March/053493.html 
(DHCP issue we investigated)

There was about 215 ports on this hypervisor before tests. Now it is 315. Setup 
used: L3 (completely routed setup, no massive ARP at all). This bug back again 
at about 250-280 ports binded to the single chassis (x4 chassis in total). I've 
also migrated to 100% routed setup with BGP (even hypervisor IP is announced 
via BGP to the core).

Once ovs starts to drop ARP (which is still used to find a GW mac) then 
instance connectivity goes down.
At this moment I have ovn-controller that contains patch by @dceara which helps 
to process DHCP, but unfortunately ovs still break connectivity for unknown 
reason.

Some logs

2025-05-22T20:56:46.375Z|3137861|ofproto_dpif_xlate|WARN|over 4096 resubmit 
actions on bridge br-int while processing 
arp,in_port=CONTROLLER,vlan_tci=0x0000,dl_src=fa:16:3e:0e:69:a5,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.124,arp_tpa=109.206.241.124,arp_op=1,arp_sha=fa:16:3e:0e:69:a5,arp_tha=00:00:00:00:00:00
2025-05-22T20:56:46.634Z|3138397|ofproto_dpif_xlate|WARN|over 4096 resubmit 
actions on bridge br-int while processing 
arp,in_port=CONTROLLER,vlan_tci=0x0000,dl_src=fa:16:3e:c3:58:40,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.182,arp_tpa=109.206.241.182,arp_op=1,arp_sha=fa:16:3e:c3:58:40,arp_tha=00:00:00:00:00:00
2025-05-22T20:56:47.102Z|3138399|ofproto_dpif_xlate|WARN|over 4096 resubmit 
actions on bridge br-int while processing 
arp,in_port=CONTROLLER,vlan_tci=0x0000,dl_src=fa:16:3e:a8:1a:71,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.116,arp_tpa=109.206.241.116,arp_op=1,arp_sha=fa:16:3e:a8:1a:71,arp_tha=00:00:00:00:00:00
2025-05-22T20:56:48.106Z|3138402|ofproto_dpif_xlate|WARN|over 4096 resubmit 
actions on bridge br-int while processing 
arp,in_port=CONTROLLER,vlan_tci=0x0000,dl_src=fa:16:3e:a8:1a:71,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.116,arp_tpa=109.206.241.116,arp_op=1,arp_sha=fa:16:3e:a8:1a:71,arp_tha=00:00:00:00:00:00
2025-05-22T20:56:50.108Z|3138404|ofproto_dpif_xlate|WARN|over 4096 resubmit 
actions on bridge br-int while processing 
arp,in_port=CONTROLLER,vlan_tci=0x0000,dl_src=fa:16:3e:a8:1a:71,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.116,arp_tpa=109.206.241.116,arp_op=1,arp_sha=fa:16:3e:a8:1a:71,arp_tha=00:00:00:00:00:00
2025-05-22T20:57:46.703Z|3155545|ofproto_dpif_xlate|WARN|over 4096 resubmit 
actions on bridge br-int while processing 
arp,in_port=CONTROLLER,vlan_tci=0x0000,dl_src=fa:16:3e:4a:9b:d5,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.225,arp_tpa=109.206.241.225,arp_op=1,arp_sha=fa:16:3e:4a:9b:d5,arp_tha=00:00:00:00:00:00
2025-05-22T20:58:47.129Z|3172149|ofproto_dpif_xlate|WARN|over 4096 resubmit 
actions on bridge br-int while processing 
arp,in_port=CONTROLLER,vlan_tci=0x0000,dl_src=fa:16:3e:90:24:af,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.217,arp_tpa=109.206.241.217,arp_op=1,arp_sha=fa:16:3e:90:24:af,arp_tha=00:00:00:00:00:00
2025-05-22T20:59:52.605Z|00115|ofproto_dpif_xlate(handler33)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=955,vlan_tci=0x0000,dl_src=fa:16:3e:e0:c8:bd,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.169,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:e0:c8:bd,arp_tha=00:00:00:00:00:00
2025-05-22T21:00:49.615Z|00133|ofproto_dpif_xlate(handler73)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=954,vlan_tci=0x0000,dl_src=fa:16:3e:90:24:af,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.217,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:90:24:af,arp_tha=00:00:00:00:00:00
2025-05-22T21:01:46.475Z|00130|ofproto_dpif_xlate(handler41)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=937,vlan_tci=0x0000,dl_src=fa:16:3e:c3:58:40,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.182,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:c3:58:40,arp_tha=00:00:00:00:00:00
2025-05-22T21:02:47.707Z|00135|ofproto_dpif_xlate(handler73)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=955,vlan_tci=0x0000,dl_src=fa:16:3e:e0:c8:bd,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.169,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:e0:c8:bd,arp_tha=00:00:00:00:00:00
2025-05-22T21:03:48.642Z|00133|ofproto_dpif_xlate(handler15)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=936,vlan_tci=0x0000,dl_src=fa:16:3e:0e:69:a5,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.124,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:0e:69:a5,arp_tha=00:00:00:00:00:00
2025-05-22T21:04:48.600Z|00123|ofproto_dpif_xlate(handler71)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=949,vlan_tci=0x0000,dl_src=fa:16:3e:5f:77:0f,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.191,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:5f:77:0f,arp_tha=00:00:00:00:00:00
2025-05-22T21:05:46.399Z|00137|ofproto_dpif_xlate(handler85)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=936,vlan_tci=0x0000,dl_src=fa:16:3e:0e:69:a5,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.124,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:0e:69:a5,arp_tha=00:00:00:00:00:00
2025-05-22T21:06:46.502Z|00120|ofproto_dpif_xlate(handler89)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=937,vlan_tci=0x0000,dl_src=fa:16:3e:c3:58:40,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.182,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:c3:58:40,arp_tha=00:00:00:00:00:00
2025-05-22T21:07:47.123Z|00534|ofproto_dpif_xlate(handler74)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=944,vlan_tci=0x0000,dl_src=fa:16:3e:28:51:c7,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.62,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:28:51:c7,arp_tha=00:00:00:00:00:00
2025-05-22T21:08:46.376Z|00124|ofproto_dpif_xlate(handler75)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=950,vlan_tci=0x0000,dl_src=fa:16:3e:45:95:72,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.249,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:45:95:72,arp_tha=00:00:00:00:00:00
2025-05-22T21:09:46.378Z|00140|ofproto_dpif_xlate(handler85)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=946,vlan_tci=0x0000,dl_src=fa:16:3e:4a:9b:d5,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.225,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:4a:9b:d5,arp_tha=00:00:00:00:00:00
2025-05-22T21:10:46.428Z|00113|ofproto_dpif_xlate(handler31)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=936,vlan_tci=0x0000,dl_src=fa:16:3e:0e:69:a5,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.124,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:0e:69:a5,arp_tha=00:00:00:00:00:00
2025-05-22T21:11:47.666Z|00119|ofproto_dpif_xlate(handler33)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=948,vlan_tci=0x0000,dl_src=fa:16:3e:39:c9:7e,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.6,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:39:c9:7e,arp_tha=00:00:00:00:00:00
2025-05-22T21:12:51.585Z|00736|ofproto_dpif_xlate(handler7)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=938,vlan_tci=0x0000,dl_src=fa:16:3e:a8:1a:71,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.116,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:a8:1a:71,arp_tha=00:00:00:00:00:00
2025-05-22T21:13:50.640Z|00121|ofproto_dpif_xlate(handler23)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=944,vlan_tci=0x0000,dl_src=fa:16:3e:28:51:c7,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.62,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:28:51:c7,arp_tha=00:00:00:00:00:00
2025-05-22T21:14:48.597Z|00127|ofproto_dpif_xlate(handler71)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=955,vlan_tci=0x0000,dl_src=fa:16:3e:e0:c8:bd,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.169,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:e0:c8:bd,arp_tha=00:00:00:00:00:00
2025-05-22T21:15:49.734Z|00118|ofproto_dpif_xlate(handler81)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=954,vlan_tci=0x0000,dl_src=fa:16:3e:90:24:af,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.217,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:90:24:af,arp_tha=00:00:00:00:00:00
2025-05-22T21:16:46.415Z|00142|ofproto_dpif_xlate(handler85)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=949,vlan_tci=0x0000,dl_src=fa:16:3e:5f:77:0f,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.191,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:5f:77:0f,arp_tha=00:00:00:00:00:00
2025-05-22T21:17:46.468Z|00130|ofproto_dpif_xlate(handler21)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=954,vlan_tci=0x0000,dl_src=fa:16:3e:90:24:af,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.217,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:90:24:af,arp_tha=00:00:00:00:00:00
2025-05-22T21:19:46.404Z|00125|ofproto_dpif_xlate(handler77)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=939,vlan_tci=0x0000,dl_src=fa:16:3e:5a:11:5b,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.170,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:5a:11:5b,arp_tha=00:00:00:00:00:00
2025-05-22T21:26:51.594Z|00130|ofproto_dpif_xlate(handler6)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=949,vlan_tci=0x0000,dl_src=fa:16:3e:5f:77:0f,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.191,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:5f:77:0f,arp_tha=00:00:00:00:00:00
2025-05-22T21:36:07.619Z|00127|ofproto_dpif_xlate(handler75)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=949,vlan_tci=0x0000,dl_src=fa:16:3e:5f:77:0f,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.191,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:5f:77:0f,arp_tha=00:00:00:00:00:00

For UPD:
2025-05-22T21:19:08.990Z|00738|ofproto_dpif_xlate(handler7)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:21:08.989Z|00794|ofproto_dpif_xlate(handler64)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:21:46.880Z|00665|ofproto_dpif_xlate(handler42)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=685,vlan_tci=0x0000,dl_src=fa:16:3e:4e:86:32,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=89.169.15.31,nw_dst=89.169.15.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=138,tp_dst=138
2025-05-22T21:23:08.986Z|00770|ofproto_dpif_xlate(handler58)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:24:08.983Z|00135|ofproto_dpif_xlate(handler29)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:25:08.987Z|00469|ofproto_dpif_xlate(handler36)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:26:08.985Z|00688|ofproto_dpif_xlate(handler46)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:28:08.991Z|00778|ofproto_dpif_xlate(handler10)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:29:08.997Z|00774|ofproto_dpif_xlate(handler58)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:30:08.997Z|00655|ofproto_dpif_xlate(handler70)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:31:08.987Z|00791|ofproto_dpif_xlate(handler56)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:32:08.997Z|00740|ofproto_dpif_xlate(handler7)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:33:08.990Z|00565|ofproto_dpif_xlate(handler40)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:33:47.521Z|00805|ofproto_dpif_xlate(handler18)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=685,vlan_tci=0x0000,dl_src=fa:16:3e:4e:86:32,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=89.169.15.31,nw_dst=89.169.15.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=138,tp_dst=138
2025-05-22T21:34:50.761Z|00429|ofproto_dpif_xlate(handler30)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=541,vlan_tci=0x0000,dl_src=fa:16:3e:57:59:7d,dl_dst=01:00:5e:7f:ff:fa,nw_src=89.169.15.68,nw_dst=239.255.255.250,nw_tos=0,nw_ecn=0,nw_ttl=2,nw_frag=no,tp_src=47183,tp_dst=1900
2025-05-22T21:37:08.997Z|00717|ofproto_dpif_xlate(handler38)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:38:09.009Z|00846|ofproto_dpif_xlate(handler66)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:39:09.006Z|00882|ofproto_dpif_xlate(handler60)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:39:55.783Z|00576|ofproto_dpif_xlate(handler24)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=541,vlan_tci=0x0000,dl_src=fa:16:3e:57:59:7d,dl_dst=01:00:5e:7f:ff:fa,nw_src=89.169.15.68,nw_dst=239.255.255.250,nw_tos=0,nw_ecn=0,nw_ttl=2,nw_frag=no,tp_src=46725,tp_dst=1900
2025-05-22T21:42:09.005Z|00777|ofproto_dpif_xlate(handler58)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:43:09.010Z|00521|ofproto_dpif_xlate(handler78)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678

Wide logs ouput while I have much more instances running for testing puproses
2025-05-22T21:34:17.922Z|3178034|bridge|INFO|bridge br-int table 251: Prefix 
lookup with: ip_dst,ip_src,ipv6_dst,ipv6_src.
2025-05-22T21:34:17.922Z|3178035|bridge|INFO|bridge br-int table 252: Prefix 
lookup with: ip_dst,ip_src,ipv6_dst,ipv6_src.
2025-05-22T21:34:17.922Z|3178036|bridge|INFO|bridge br-int table 253: Prefix 
lookup with: ip_dst,ip_src,ipv6_dst,ipv6_src.
2025-05-22T21:34:17.922Z|3178037|bridge|INFO|bridge br-int table 254: Prefix 
lookup with: ip_dst,ip_src,ipv6_dst,ipv6_src.
2025-05-22T21:34:38.993Z|00794|ofproto_dpif_upcall(handler56)|WARN|Dropped 3 
log messages in last 52 seconds (most recently, 30 seconds ago) due to 
excessive rate
2025-05-22T21:34:38.993Z|00795|ofproto_dpif_upcall(handler56)|WARN|Flow: 
udp,in_port=278,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678

bridge("br-int")
----------------
 0. priority 0
    drop

Final flow: unchanged
Megaflow: recirc_id=0,eth,ip,in_port=278,dl_src=fa:16:3e:66:0c:6e,nw_frag=no
Datapath actions: drop
2025-05-22T21:34:50.761Z|00428|ofproto_dpif_xlate(handler30)|WARN|Dropped 3 log 
messages in last 63 seconds (most recently, 12 seconds ago) due to excessive 
rate
2025-05-22T21:34:50.761Z|00429|ofproto_dpif_xlate(handler30)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=541,vlan_tci=0x0000,dl_src=fa:16:3e:57:59:7d,dl_dst=01:00:5e:7f:ff:fa,nw_src=89.169.15.68,nw_dst=239.255.255.250,nw_tos=0,nw_ecn=0,nw_ttl=2,nw_frag=no,tp_src=47183,tp_dst=1900
2025-05-22T21:35:38.996Z|00811|ofproto_dpif_upcall(handler12)|WARN|Dropped 2 
log messages in last 48 seconds (most recently, 30 seconds ago) due to 
excessive rate
2025-05-22T21:35:38.996Z|00812|ofproto_dpif_upcall(handler12)|WARN|Flow: 
udp,in_port=278,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678

bridge("br-int")
----------------
 0. priority 0
    drop

Final flow: unchanged
Megaflow: recirc_id=0,eth,ip,in_port=278,dl_src=fa:16:3e:66:0c:6e,nw_frag=no
Datapath actions: drop
2025-05-22T21:36:07.250Z|00718|ofproto_dpif_xlate(handler84)|DBG|bridge br-ex: 
learned that fa:16:3e:f8:96:1c is on port 
patch-provnet-c1924e42-2557-4d2c-8f5b-8cdd25f71fed-to-br-int in VLAN 1000
2025-05-22T21:36:07.619Z|00126|ofproto_dpif_xlate(handler75)|WARN|Dropped 2 log 
messages in last 59 seconds (most recently, 29 seconds ago) due to excessive 
rate
2025-05-22T21:36:07.619Z|00127|ofproto_dpif_xlate(handler75)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=949,vlan_tci=0x0000,dl_src=fa:16:3e:5f:77:0f,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.191,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:5f:77:0f,arp_tha=00:00:00:00:00:00
2025-05-22T21:36:39.003Z|00732|ofproto_dpif_upcall(handler50)|WARN|Dropped 21 
log messages in last 31 seconds (most recently, 30 seconds ago) due to 
excessive rate
2025-05-22T21:36:39.003Z|00733|ofproto_dpif_upcall(handler50)|WARN|Flow: 
udp,in_port=278,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678

bridge("br-int")
----------------
 0. priority 0
    drop

Final flow: unchanged
Megaflow: recirc_id=0,eth,ip,in_port=278,dl_src=fa:16:3e:66:0c:6e,nw_frag=no
Datapath actions: drop
2025-05-22T21:37:08.997Z|00716|ofproto_dpif_xlate(handler38)|WARN|Dropped 21 
log messages in last 61 seconds (most recently, 30 seconds ago) due to 
excessive rate
2025-05-22T21:37:08.997Z|00717|ofproto_dpif_xlate(handler38)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:37:39.002Z|00806|ofproto_dpif_upcall(handler18)|WARN|Dropped 1 
log messages in last 30 seconds (most recently, 30 seconds ago) due to 
excessive rate
2025-05-22T21:37:39.003Z|00807|ofproto_dpif_upcall(handler18)|WARN|Flow: 
udp,in_port=278,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678

bridge("br-int")
----------------
 0. priority 0
    drop

Final flow: unchanged
Megaflow: recirc_id=0,eth,ip,in_port=278,dl_src=fa:16:3e:66:0c:6e,nw_frag=no
Datapath actions: drop
2025-05-22T21:38:09.009Z|00845|ofproto_dpif_xlate(handler66)|WARN|Dropped 1 log 
messages in last 30 seconds (most recently, 30 seconds ago) due to excessive 
rate
2025-05-22T21:38:09.009Z|00846|ofproto_dpif_xlate(handler66)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:38:39.003Z|00487|ofproto_dpif_upcall(handler76)|WARN|Dropped 1 
log messages in last 30 seconds (most recently, 30 seconds ago) due to 
excessive rate
2025-05-22T21:38:39.004Z|00488|ofproto_dpif_upcall(handler76)|WARN|Flow: 
udp,in_port=278,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678

bridge("br-int")
----------------
 0. priority 0
    drop

Final flow: unchanged
Megaflow: recirc_id=0,eth,ip,in_port=278,dl_src=fa:16:3e:66:0c:6e,nw_frag=no
Datapath actions: drop
2025-05-22T21:39:09.006Z|00881|ofproto_dpif_xlate(handler60)|WARN|Dropped 1 log 
messages in last 30 seconds (most recently, 30 seconds ago) due to excessive 
rate
2025-05-22T21:39:09.006Z|00882|ofproto_dpif_xlate(handler60)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:39:39.009Z|00796|ofproto_dpif_upcall(handler56)|WARN|Dropped 21 
log messages in last 30 seconds (most recently, 23 seconds ago) due to 
excessive rate
2025-05-22T21:39:39.009Z|00797|ofproto_dpif_upcall(handler56)|WARN|Flow: 
udp,in_port=278,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678

bridge("br-int")
----------------
 0. priority 0
    drop

Final flow: unchanged
Megaflow: recirc_id=0,eth,ip,in_port=278,dl_src=fa:16:3e:66:0c:6e,nw_frag=no
Datapath actions: drop
2025-05-22T21:39:55.782Z|00575|ofproto_dpif_xlate(handler24)|WARN|Dropped 21 
log messages in last 40 seconds (most recently, 17 seconds ago) due to 
excessive rate
2025-05-22T21:39:55.783Z|00576|ofproto_dpif_xlate(handler24)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=541,vlan_tci=0x0000,dl_src=fa:16:3e:57:59:7d,dl_dst=01:00:5e:7f:ff:fa,nw_src=89.169.15.68,nw_dst=239.255.255.250,nw_tos=0,nw_ecn=0,nw_ttl=2,nw_frag=no,tp_src=46725,tp_dst=1900
2025-05-22T21:41:06.565Z|00116|ofproto_dpif_xlate(handler13)|WARN|Dropped 2 log 
messages in last 58 seconds (most recently, 28 seconds ago) due to excessive 
rate
2025-05-22T21:41:06.565Z|00117|ofproto_dpif_xlate(handler13)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
arp,in_port=955,vlan_tci=0x0000,dl_src=fa:16:3e:e0:c8:bd,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.169,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:e0:c8:bd,arp_tha=00:00:00:00:00:00
2025-05-22T21:41:06.565Z|00118|ofproto_dpif_upcall(handler13)|WARN|Dropped 3 
log messages in last 71 seconds (most recently, 28 seconds ago) due to 
excessive rate
2025-05-22T21:41:06.565Z|00119|ofproto_dpif_upcall(handler13)|WARN|Flow: 
arp,in_port=209,vlan_tci=0x0000,dl_src=fa:16:3e:e0:c8:bd,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=109.206.241.169,arp_tpa=109.206.241.1,arp_op=1,arp_sha=fa:16:3e:e0:c8:bd,arp_tha=00:00:00:00:00:00

bridge("br-int")
----------------
 0. priority 0
    drop

Final flow: unchanged
Megaflow: recirc_id=0,eth,arp,in_port=209,dl_src=fa:16:3e:e0:c8:bd
Datapath actions: drop
2025-05-22T21:42:09.005Z|00776|ofproto_dpif_xlate(handler58)|WARN|Dropped 21 
log messages in last 62 seconds (most recently, 30 seconds ago) due to 
excessive rate
2025-05-22T21:42:09.005Z|00777|ofproto_dpif_xlate(handler58)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:42:09.005Z|00778|ofproto_dpif_upcall(handler58)|WARN|Dropped 21 
log messages in last 62 seconds (most recently, 30 seconds ago) due to 
excessive rate
2025-05-22T21:42:09.005Z|00779|ofproto_dpif_upcall(handler58)|WARN|Flow: 
udp,in_port=278,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678

bridge("br-int")
----------------
 0. priority 0
    drop

Final flow: unchanged
Megaflow: recirc_id=0,eth,ip,in_port=278,dl_src=fa:16:3e:66:0c:6e,nw_frag=no
Datapath actions: drop
2025-05-22T21:42:38.238Z|00651|ofproto_dpif_xlate(handler82)|DBG|bridge br-ex: 
learned that fa:16:3e:0b:d4:87 is on port 
patch-provnet-c1924e42-2557-4d2c-8f5b-8cdd25f71fed-to-br-int in VLAN 1000
2025-05-22T21:43:09.010Z|00520|ofproto_dpif_xlate(handler78)|WARN|Dropped 21 
log messages in last 30 seconds (most recently, 29 seconds ago) due to 
excessive rate
2025-05-22T21:43:09.010Z|00521|ofproto_dpif_xlate(handler78)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:43:09.010Z|00522|ofproto_dpif_upcall(handler78)|WARN|Dropped 21 
log messages in last 30 seconds (most recently, 29 seconds ago) due to 
excessive rate
2025-05-22T21:43:09.010Z|00523|ofproto_dpif_upcall(handler78)|WARN|Flow: 
udp,in_port=278,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678

bridge("br-int")
----------------
 0. priority 0
    drop

Final flow: unchanged
Megaflow: recirc_id=0,eth,ip,in_port=278,dl_src=fa:16:3e:66:0c:6e,nw_frag=no
Datapath actions: drop
2025-05-22T21:44:09.001Z|00577|ofproto_dpif_xlate(handler24)|WARN|Dropped 1 log 
messages in last 30 seconds (most recently, 30 seconds ago) due to excessive 
rate
2025-05-22T21:44:09.001Z|00578|ofproto_dpif_xlate(handler24)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=473,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678
2025-05-22T21:44:39.002Z|00813|ofproto_dpif_upcall(handler12)|WARN|Dropped 2 
log messages in last 60 seconds (most recently, 30 seconds ago) due to 
excessive rate
2025-05-22T21:44:39.002Z|00814|ofproto_dpif_upcall(handler12)|WARN|Flow: 
udp,in_port=278,vlan_tci=0x0000,dl_src=fa:16:3e:66:0c:6e,dl_dst=ff:ff:ff:ff:ff:ff,nw_src=83.217.210.206,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=64,nw_frag=no,tp_src=5678,tp_dst=5678

bridge("br-int")
----------------
 0. priority 0
    drop

Final flow: unchanged
Megaflow: recirc_id=0,eth,ip,in_port=278,dl_src=fa:16:3e:66:0c:6e,nw_frag=no
Datapath actions: drop
2025-05-22T21:45:00.810Z|00779|ofproto_dpif_xlate(handler10)|WARN|Dropped 1 log 
messages in last 22 seconds (most recently, 22 seconds ago) due to excessive 
rate
2025-05-22T21:45:00.811Z|00780|ofproto_dpif_xlate(handler10)|WARN|over 4096 
resubmit actions on bridge br-int while processing 
udp,in_port=541,vlan_tci=0x0000,dl_src=fa:16:3e:57:59:7d,dl_dst=01:00:5e:7f:ff:fa,nw_src=89.169.15.68,nw_dst=239.255.255.250,nw_tos=0,nw_ecn=0,nw_ttl=2,nw_frag=no,tp_src=58311,tp_dst=1900

Seeing next tcpdump inside the instance. It tries to learn GW arp (which is 
Juniper) but ovs drops that flow
https://imgur.com/a/g4E7JZz

As you can see trafic flows into VM because of L3 routed setup, however VM 
unable to send outgoing traffic because of GW MAC is unknown due to dropped ARP 
flows.

--
Regards,

Ilia Baikov
[email protected]

--
Regards,

Ilia Baikov
[email protected]
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