[ 2195.634500] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 2195.693322] br0: port 1(dummy0) entered blocking state
[ 2195.698454] br0: port 1(dummy0) entered disabled state
[ 2195.703815] device dummy0 entered promiscuous mode
[ 2195.796011] br0: port 1(dummy0) entered blocking state
[ 2195.801145] br0: port 1(dummy0) entered forwarding state
[ 2195.806607] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready