[ 3969.681916] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 3969.744385] br0: port 1(veth1) entered blocking state
[ 3969.744413] br0: port 1(veth1) entered disabled state
[ 3969.744600] device veth1 entered promiscuous mode
[ 3969.749787] br0: port 1(veth1) entered blocking state
[ 3969.749808] br0: port 1(veth1) entered forwarding state
[ 3969.749876] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready
[ 3969.761378] br0: port 1(veth1) entered disabled state
[ 3969.761924] br0: port 2(veth3) entered blocking state
[ 3969.761946] br0: port 2(veth3) entered disabled state
[ 3969.762129] device veth3 entered promiscuous mode
[ 3969.980625] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 3969.980658] br0: port 1(veth1) entered blocking state
[ 3969.980666] br0: port 1(veth1) entered forwarding state
[ 3970.144316] IPv6: ADDRCONF(NETDEV_CHANGE): veth3: link becomes ready
[ 3970.144353] br0: port 2(veth3) entered blocking state
[ 3970.144363] br0: port 2(veth3) entered forwarding state
[ 3978.912398] device veth0 entered promiscuous mode
[ 3979.382696] device veth2 entered promiscuous mode
[ 4113.908103] br0: port 1(veth1) entered disabled state
[ 4114.058022] br0: port 2(veth3) entered disabled state
[ 4114.143159] device veth1 left promiscuous mode
[ 4114.143204] br0: port 1(veth1) entered disabled state
[ 4114.219595] device veth3 left promiscuous mode
[ 4114.219628] br0: port 2(veth3) entered disabled state