[ 1974.100503][T11856] br0: port 1(dummy0) entered blocking state
[ 1974.100750][T11856] br0: port 1(dummy0) entered disabled state
[ 1974.100976][T11856] dummy0: entered allmulticast mode
[ 1974.102122][T11856] dummy0: entered promiscuous mode
[ 1974.128557][T11857] br0: port 1(dummy0) entered blocking state
[ 1974.129228][T11857] br0: port 1(dummy0) entered forwarding state
[ 1976.194477][   T12] dummy0: left allmulticast mode
[ 1976.194781][   T12] dummy0: left promiscuous mode
[ 1976.195005][   T12] br0: port 1(dummy0) entered disabled state