[ 2533.709925] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 2533.760837] br0: port 1(dummy0) entered blocking state
[ 2533.761446] br0: port 1(dummy0) entered disabled state
[ 2533.762482] device dummy0 entered promiscuous mode
[ 2533.879019] br0: port 1(dummy0) entered blocking state
[ 2533.879628] br0: port 1(dummy0) entered forwarding state
[ 2533.880241] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready