[ 3945.273881] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 3945.350160] br0: port 1(veth1) entered blocking state
[ 3945.351815] br0: port 1(veth1) entered disabled state
[ 3945.362921] device veth1 entered promiscuous mode
[ 3945.364215] br0: port 1(veth1) entered blocking state
[ 3945.365459] br0: port 1(veth1) entered forwarding state
[ 3945.366971] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready
[ 3945.373932] br0: port 1(veth1) entered disabled state
[ 3945.380070] br0: port 2(veth3) entered blocking state
[ 3945.381380] br0: port 2(veth3) entered disabled state
[ 3945.382810] device veth3 entered promiscuous mode
[ 3945.467777] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 3945.469570] br0: port 1(veth1) entered blocking state
[ 3945.470877] br0: port 1(veth1) entered forwarding state
[ 3945.596543] IPv6: ADDRCONF(NETDEV_CHANGE): veth2: link becomes ready
[ 3945.598179] IPv6: ADDRCONF(NETDEV_CHANGE): veth3: link becomes ready
[ 3945.599698] br0: port 2(veth3) entered blocking state
[ 3945.600903] br0: port 2(veth3) entered forwarding state
[ 3954.642370] device veth0 entered promiscuous mode
[ 3955.505696] device veth2 entered promiscuous mode
[ 4090.159137] br0: port 1(veth1) entered disabled state
[ 4090.285654] br0: port 2(veth3) entered disabled state
[ 4090.402363] device veth1 left promiscuous mode
[ 4090.403621] br0: port 1(veth1) entered disabled state
[ 4090.451113] device veth3 left promiscuous mode
[ 4090.452276] br0: port 2(veth3) entered disabled state