We have centos 7 with several inteface(vlan configuration).
eno1.900@eno1
eno1.956@eno1
eno1.957@eno1
When we joining to multicast with (ip addr add IP dev eno1.956 autojoin) command. Our system sending report packer from lo interface, but leave packer sending from binding(from command) interface.
tcpdump -i lo igmp
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on lo, link-type EN10MB (Ethernet), capture size 262144 bytes
12:19:26.686734 IP x.x.x.x > y.y.y.y: igmp v2 report y.y.y.y
12:19:31.439741 IP x.x.x.x > y.y.y.y: igmp v2 report y.y.y.y
tcpdump -i eno1.956 igmp
12:16:23.310461 IP x.x.x.x > all-routers.mcast.net: igmp leave y.y.y.y
Can you tell me what we missing?