[ 3887.119383] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 3887.188380] br0: port 1(veth1) entered blocking state
[ 3887.188407] br0: port 1(veth1) entered disabled state
[ 3887.188570] device veth1 entered promiscuous mode
[ 3887.188970] br0: port 1(veth1) entered blocking state
[ 3887.188983] br0: port 1(veth1) entered forwarding state
[ 3887.189063] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready
[ 3887.200775] br0: port 1(veth1) entered disabled state
[ 3887.206499] br0: port 2(veth3) entered blocking state
[ 3887.206514] br0: port 2(veth3) entered disabled state
[ 3887.206652] device veth3 entered promiscuous mode
[ 3887.398101] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 3887.398138] br0: port 1(veth1) entered blocking state
[ 3887.398145] br0: port 1(veth1) entered forwarding state
[ 3887.538533] IPv6: ADDRCONF(NETDEV_CHANGE): veth3: link becomes ready
[ 3887.538572] br0: port 2(veth3) entered blocking state
[ 3887.538581] br0: port 2(veth3) entered forwarding state
[ 3896.207524] device veth0 entered promiscuous mode
[ 3896.659555] device veth2 entered promiscuous mode
[ 4030.822658] br0: port 1(veth1) entered disabled state
[ 4030.962453] br0: port 2(veth3) entered disabled state
[ 4031.067482] device veth1 left promiscuous mode
[ 4031.067538] br0: port 1(veth1) entered disabled state
[ 4031.134348] device veth3 left promiscuous mode
[ 4031.134387] br0: port 2(veth3) entered disabled state