[ 4763.462785] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 4763.545184] br0: port 1(veth1) entered blocking state
[ 4763.546691] br0: port 1(veth1) entered disabled state
[ 4763.548570] device veth1 entered promiscuous mode
[ 4763.549894] br0: port 1(veth1) entered blocking state
[ 4763.551056] br0: port 1(veth1) entered forwarding state
[ 4763.553372] br0: port 1(veth1) entered disabled state
[ 4763.563398] br0: port 2(veth3) entered blocking state
[ 4763.599002] br0: port 2(veth3) entered disabled state
[ 4763.612949] device veth3 entered promiscuous mode
[ 4763.764977] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 4763.767201] br0: port 1(veth1) entered blocking state
[ 4763.768446] br0: port 1(veth1) entered forwarding state
[ 4763.771477] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready
[ 4763.896559] IPv6: ADDRCONF(NETDEV_CHANGE): veth3: link becomes ready
[ 4763.898211] br0: port 2(veth3) entered blocking state
[ 4763.899455] br0: port 2(veth3) entered forwarding state
[ 4773.069680] device veth0 entered promiscuous mode
[ 4774.167196] device veth2 entered promiscuous mode
[ 4909.088482] br0: port 1(veth1) entered disabled state
[ 4909.253119] br0: port 2(veth3) entered disabled state
[ 4909.340322] device veth1 left promiscuous mode
[ 4909.341523] br0: port 1(veth1) entered disabled state
[ 4909.398932] device veth3 left promiscuous mode
[ 4909.400148] br0: port 2(veth3) entered disabled state