[  619.887480] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[  620.053699] br0: port 1(dummy0) entered blocking state
[  620.059047] br0: port 1(dummy0) entered disabled state
[  620.064867] device dummy0 entered promiscuous mode
[  620.372226] br0: port 1(dummy0) entered blocking state
[  620.377561] br0: port 1(dummy0) entered forwarding state
[  620.383477] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready