When adding another IP address to br-ex, geneve traffic sent from this node may be sent with the new IP address rather than the one configured for this tunnel. This will cause traffic to be dropped by the destination with the error:

[root@ovn-control-plane openvswitch]# cat  ovs-vswitchd.log  | grep fc00:f853:ccd:e793::4
2024-04-17T16:47:02.146Z|00012|tunnel(revalidator10)|WARN|receive tunnel port not found (tcp6,tun_id=0xff0003,tun_src=0.0.0.0,tun_dst=0.0.0.0,tun_ipv6_src=fc00:f853:ccd:e793:ffff::1,tun_ipv6_dst=fc00:f853:ccd:e793::3,tun_gbp_id=0,tun_gbp_flags=0,tun_tos=0,tun_ttl=64,tun_erspan_ver=0,gtpu_flags=0,gtpu_msgtype=0,tun_flags=csum|key,in_port=5,vlan_tci=0x0000,dl_src=0a:58:2b:22:eb:86,dl_dst=0a:58:92:3f:71:e5,ipv6_src=fc00:f853:ccd:e793::4,ipv6_dst=fd00:10:244:1::7,ipv6_label=0x630b1,nw_tos=0,nw_ecn=0,nw_ttl=63,nw_frag=no,tp_src=8080,tp_dst=59130,tcp_flags=syn|ack)

This is more likely to occur on ipv6 than ipv4, due to IP address ordering on the NIC and linux rules used to determine source IP to use when sending host originated traffic.

    All versions

    Always