[ 2552.196395] br0: port 1(dummy0) entered blocking state
[ 2552.196406] br0: port 1(dummy0) entered disabled state
[ 2552.196494] device dummy0 entered promiscuous mode
[ 2552.242072] br0: port 1(dummy0) entered blocking state
[ 2552.242078] br0: port 1(dummy0) entered forwarding state
[ 2552.242109] IPv6: ADDRCONF(NETDEV_CHANGE): br0: link becomes ready