[  246.992251] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[  247.012220] br0: port 1(dummy0) entered blocking state
[  247.012224] br0: port 1(dummy0) entered disabled state
[  247.012265] device dummy0 entered promiscuous mode
[  247.050191] br0: port 1(dummy0) entered blocking state
[  247.050196] br0: port 1(dummy0) entered forwarding state
[  247.050236] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready