[ 3932.544631] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 3932.619512] br0: port 1(veth1) entered blocking state
[ 3932.620782] br0: port 1(veth1) entered disabled state
[ 3932.625421] device veth1 entered promiscuous mode
[ 3932.626790] br0: port 1(veth1) entered blocking state
[ 3932.627989] br0: port 1(veth1) entered forwarding state
[ 3932.629361] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready
[ 3932.639061] br0: port 1(veth1) entered disabled state
[ 3932.654982] br0: port 2(veth3) entered blocking state
[ 3932.656195] br0: port 2(veth3) entered disabled state
[ 3932.657511] device veth3 entered promiscuous mode
[ 3932.739908] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 3932.741668] br0: port 1(veth1) entered blocking state
[ 3932.742973] br0: port 1(veth1) entered forwarding state
[ 3932.835088] IPv6: ADDRCONF(NETDEV_CHANGE): veth2: link becomes ready
[ 3932.836656] IPv6: ADDRCONF(NETDEV_CHANGE): veth3: link becomes ready
[ 3932.838180] br0: port 2(veth3) entered blocking state
[ 3932.839348] br0: port 2(veth3) entered forwarding state
[ 3941.951873] device veth0 entered promiscuous mode
[ 3942.847377] device veth2 entered promiscuous mode
[ 4077.467131] br0: port 1(veth1) entered disabled state
[ 4077.646312] br0: port 2(veth3) entered disabled state
[ 4077.743636] device veth1 left promiscuous mode
[ 4077.745065] br0: port 1(veth1) entered disabled state
[ 4077.792092] device veth3 left promiscuous mode
[ 4077.793291] br0: port 2(veth3) entered disabled state