[  247.079586] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[  247.101018] br0: port 1(dummy0) entered blocking state
[  247.101023] br0: port 1(dummy0) entered disabled state
[  247.101123] device dummy0 entered promiscuous mode
[  247.229756] br0: port 1(dummy0) entered blocking state
[  247.229766] br0: port 1(dummy0) entered forwarding state
[  247.229803] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready