[ 2213.394917] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 2213.455457] br0: port 1(dummy0) entered blocking state
[ 2213.460600] br0: port 1(dummy0) entered disabled state
[ 2213.465994] device dummy0 entered promiscuous mode
[ 2213.562047] br0: port 1(dummy0) entered blocking state
[ 2213.567179] br0: port 1(dummy0) entered forwarding state
[ 2213.572675] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready