[ 2530.487880] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 2530.517167] br0: port 1(dummy0) entered blocking state
[ 2530.517179] br0: port 1(dummy0) entered disabled state
[ 2530.517263] device dummy0 entered promiscuous mode
[ 2530.570529] br0: port 1(dummy0) entered blocking state
[ 2530.570547] br0: port 1(dummy0) entered forwarding state
[ 2530.570615] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready