[ 3604.391496] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this. [ 3604.450010] br0: port 1(dummy0) entered blocking state [ 3604.450024] br0: port 1(dummy0) entered disabled state [ 3604.450112] device dummy0 entered promiscuous mode [ 3604.569687] br0: port 1(dummy0) entered blocking state [ 3604.569706] br0: port 1(dummy0) entered forwarding state [ 3604.569775] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready