[ 1697.773145] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 1697.836728] br0: port 1(veth1) entered blocking state
[ 1697.836752] br0: port 1(veth1) entered disabled state
[ 1697.836840] device veth1 entered promiscuous mode
[ 1697.836944] br0: port 1(veth1) entered blocking state
[ 1697.836947] br0: port 1(veth1) entered forwarding state
[ 1697.844197] br0: port 2(veth3) entered blocking state
[ 1697.845197] br0: port 2(veth3) entered disabled state
[ 1697.845283] device veth3 entered promiscuous mode
[ 1697.845337] br0: port 2(veth3) entered blocking state
[ 1697.845340] br0: port 2(veth3) entered forwarding state
[ 1697.894331] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 1697.899550] br0: port 2(veth3) entered disabled state
[ 1698.026848] IPv6: ADDRCONF(NETDEV_CHANGE): veth2: link becomes ready
[ 1698.026904] IPv6: ADDRCONF(NETDEV_CHANGE): veth3: link becomes ready
[ 1698.026948] br0: port 2(veth3) entered blocking state
[ 1698.026953] br0: port 2(veth3) entered forwarding state
[ 1706.787261] device veth0 entered promiscuous mode
[ 1707.281347] device veth2 entered promiscuous mode
[ 1841.344117] br0: port 1(veth1) entered disabled state
[ 1841.534130] br0: port 2(veth3) entered disabled state
[ 1841.572631] device veth1 left promiscuous mode
[ 1841.572684] br0: port 1(veth1) entered disabled state
[ 1841.599959] device veth3 left promiscuous mode
[ 1841.600945] br0: port 2(veth3) entered disabled state