TCPDump showing burst "IP6 Multicast message.."

[hanturaya]

Hello, im just do fresh install on my proxmox server and set 2 NICs (eno1 bridged on vmbr0, eno2 bridged on vmbr471)...
.. but when I've set my second NIC and look at tcpdump -ni eno2 there is an output like this

15:59:21.338738 IP6 :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.338912 IP6 :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.339085 IP6 :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.339260 IP6 fe80::46a8:42ff:fe13:5849 > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.339441 IP6 fe80::266e:96ff:fe15:10bd > ff02::16: HBH ICMP6, multicast listener report v2, 5 group record(s), length 108 15:59:21.339604 IP6 fe80::46a8:42ff:fe13:5849 > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.339787 IP6 fe80::266e:96ff:fe15:10bd > ff02::16: HBH ICMP6, multicast listener report v2, 4 group record(s), length 88 15:59:21.340035 IP6 fe80::266e:96ff:fe15:10bd > ff02::16: HBH ICMP6, multicast listener report v2, 4 group record(s), length 88 15:59:21.340200 IP6 :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.340367 IP6 fe80::46a8:42ff:fe13:5849 > ff02::16: HBH ICMP6, multicast listener report v2, 5 group record(s), length 108 15:59:21.340546 IP6 :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.340719 IP6 :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.340892 IP6 :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.341118 IP6 fe80::46a8:42ff:fe13:5849 > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.341301 IP6 fe80::266e:96ff:fe15:10bd > ff02::16: HBH ICMP6, multicast listener report v2, 5 group record(s), length 108 15:59:21.341464 IP6 fe80::46a8:42ff:fe13:5849 > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.341647 IP6 fe80::266e:96ff:fe15:10bd > ff02::16: HBH ICMP6, multicast listener report v2, 4 group record(s), length 88 15:59:21.341820 IP6 fe80::266e:96ff:fe15:10bd > ff02::16: HBH ICMP6, multicast listener report v2, 4 group record(s), length 88 15:59:21.341992 IP6 :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.342219 IP6 fe80::46a8:42ff:fe13:5849 > ff02::16: HBH ICMP6, multicast listener report v2, 5 group record(s), length 108 15:59:21.342389 IP6 :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.342564 IP6 :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.342736 IP6 :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.342910 IP6 fe80::46a8:42ff:fe13:5849 > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.343085 IP6 fe80::266e:96ff:fe15:10bd > ff02::16: HBH ICMP6, multicast listener report v2, 5 group record(s), length 108 15:59:21.345305 IP6 fe80::46a8:42ff:fe13:5849 > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 15:59:21.345487 IP6 fe80::266e:96ff:fe15:10bd > ff02::16: HBH ICMP6, multicast listener report v2, 4 group record(s), length 88 15:59:21.345660 IP6 fe80::266e:96ff:fe15:10bd > ff02::16: HBH ICMP6, multicast listener report v2, 4 group record(s), length 88 15:59:21.345824 IP6 :: > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28

and for dmesg showing this..
[ 1043.325177] net_ratelimit: 1961 callbacks suppressed [ 1043.325206] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1043.327173] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1043.328940] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1043.330727] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1043.332525] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1043.334318] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1043.338346] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1043.342556] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1043.344370] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1043.346358] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1048.332407] net_ratelimit: 1962 callbacks suppressed [ 1048.332425] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1048.334199] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1048.338099] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1048.342504] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1048.344295] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1048.350115] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1048.354393] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1048.356163] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1048.357999] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0) [ 1048.359799] vmbr471: received packet on eno2 with own address as source address (addr:24:6e:96:15:0a:b1, vlan:0)

is this normal ? or maybe there is a loop ?

 

[spirit]

received packet on eno2 with own address as source address

sound like a loop