[ 1975.756965][T31993] br0: port 1(dummy0) entered blocking state
[ 1975.757158][T31993] br0: port 1(dummy0) entered disabled state
[ 1975.757338][T31993] dummy0: entered allmulticast mode
[ 1975.758363][T31993] dummy0: entered promiscuous mode
[ 1975.778372][T31994] br0: port 1(dummy0) entered blocking state
[ 1975.778690][T31994] br0: port 1(dummy0) entered forwarding state
[ 1977.634029][   T12] dummy0: left allmulticast mode
[ 1977.634324][   T12] dummy0: left promiscuous mode
[ 1977.634546][   T12] br0: port 1(dummy0) entered disabled state