[ 2248.125049][ T3209] br0: port 1(dummy0) entered blocking state
[ 2248.125292][ T3209] br0: port 1(dummy0) entered disabled state
[ 2248.125503][ T3209] dummy0: entered allmulticast mode
[ 2248.127398][ T3209] dummy0: entered promiscuous mode
[ 2248.167734][ T3210] br0: port 1(dummy0) entered blocking state
[ 2248.168059][ T3210] br0: port 1(dummy0) entered forwarding state
[ 2250.516716][   T68] dummy0: left allmulticast mode
[ 2250.517807][   T68] dummy0: left promiscuous mode
[ 2250.518050][   T68] br0: port 1(dummy0) entered disabled state