[ 2224.693352] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 2224.756133] br0: port 1(dummy0) entered blocking state
[ 2224.761277] br0: port 1(dummy0) entered disabled state
[ 2224.766648] device dummy0 entered promiscuous mode
[ 2224.863485] br0: port 1(dummy0) entered blocking state
[ 2224.868626] br0: port 1(dummy0) entered forwarding state
[ 2224.874161] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready