[ 2485.310358] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 2485.359014] br0: port 1(dummy0) entered blocking state
[ 2485.359613] br0: port 1(dummy0) entered disabled state
[ 2485.360535] device dummy0 entered promiscuous mode
[ 2485.469056] br0: port 1(dummy0) entered blocking state
[ 2485.469646] br0: port 1(dummy0) entered forwarding state
[ 2485.470244] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready