[11857.626478] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[11857.643445] br0: port 1(veth0) entered blocking state
[11857.644142] br0: port 1(veth0) entered disabled state
[11857.645690] device veth0 entered promiscuous mode
[11857.656080] br0: port 2(veth1) entered blocking state
[11857.656781] br0: port 2(veth1) entered disabled state
[11857.658050] device veth1 entered promiscuous mode
[11857.668975] br0: port 2(veth1) entered blocking state
[11857.669669] br0: port 2(veth1) entered forwarding state
[11857.698704] br0: port 2(veth1) entered disabled state
[11857.699447] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[11857.700457] br0: port 1(veth0) entered blocking state
[11857.701085] br0: port 1(veth0) entered forwarding state
[11857.727682] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[11857.728743] br0: port 2(veth1) entered blocking state
[11857.729376] br0: port 2(veth1) entered forwarding state
[11857.816124] device veth1 left promiscuous mode
[11857.816829] br0: port 2(veth1) entered disabled state
[11857.820128] device veth0 left promiscuous mode
[11857.820810] br0: port 1(veth0) entered disabled state