[ 2223.265505][T29051] br0: port 1(dummy0) entered blocking state
[ 2223.265705][T29051] br0: port 1(dummy0) entered disabled state
[ 2223.265867][T29051] dummy0: entered allmulticast mode
[ 2223.267296][T29051] dummy0: entered promiscuous mode
[ 2223.292464][T29052] br0: port 1(dummy0) entered blocking state
[ 2223.292806][T29052] br0: port 1(dummy0) entered forwarding state
[ 2225.685218][   T12] dummy0: left allmulticast mode
[ 2225.685867][   T12] dummy0: left promiscuous mode
[ 2225.686381][   T12] br0: port 1(dummy0) entered disabled state