[ 1916.039612][T20222] br0: port 1(dummy0) entered blocking state
[ 1916.039802][T20222] br0: port 1(dummy0) entered disabled state
[ 1916.039969][T20222] dummy0: entered allmulticast mode
[ 1916.040967][T20222] dummy0: entered promiscuous mode
[ 1916.070540][T20223] br0: port 1(dummy0) entered blocking state
[ 1916.070782][T20223] br0: port 1(dummy0) entered forwarding state
[ 1918.025137][   T12] dummy0: left allmulticast mode
[ 1918.025806][   T12] dummy0: left promiscuous mode
[ 1918.026031][   T12] br0: port 1(dummy0) entered disabled state