[ 2011.752637] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 2011.786635] br0: port 1(veth1) entered blocking state
[ 2011.789897] br0: port 1(veth1) entered disabled state
[ 2011.789978] device veth1 entered promiscuous mode
[ 2011.790935] br0: port 1(veth1) entered blocking state
[ 2011.790948] br0: port 1(veth1) entered forwarding state
[ 2011.794242] br0: port 2(veth3) entered blocking state
[ 2011.794357] br0: port 2(veth3) entered disabled state
[ 2011.794424] device veth3 entered promiscuous mode
[ 2011.798393] br0: port 2(veth3) entered blocking state
[ 2011.798396] br0: port 2(veth3) entered forwarding state
[ 2011.837599] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 2011.839094] br0: port 2(veth3) entered disabled state
[ 2011.910416] IPv6: ADDRCONF(NETDEV_CHANGE): veth3: link becomes ready
[ 2011.910433] br0: port 2(veth3) entered blocking state
[ 2011.910448] br0: port 2(veth3) entered forwarding state
[ 2020.357277] device veth0 entered promiscuous mode
[ 2020.723757] device veth2 entered promiscuous mode
[ 2154.420098] br0: port 1(veth1) entered disabled state
[ 2154.479042] br0: port 2(veth3) entered disabled state
[ 2154.538481] device veth1 left promiscuous mode
[ 2154.538654] br0: port 1(veth1) entered disabled state
[ 2154.561275] device veth3 left promiscuous mode
[ 2154.561317] br0: port 2(veth3) entered disabled state