[ 3007.073110] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 3007.120776] br0: port 1(dummy0) entered blocking state
[ 3007.121524] br0: port 1(dummy0) entered disabled state
[ 3007.122460] device dummy0 entered promiscuous mode
[ 3007.219791] br0: port 1(dummy0) entered blocking state
[ 3007.220545] br0: port 1(dummy0) entered forwarding state
[ 3007.221340] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready