[ 1944.215496][T10348] br0: port 1(dummy0) entered blocking state
[ 1944.215685][T10348] br0: port 1(dummy0) entered disabled state
[ 1944.215857][T10348] dummy0: entered allmulticast mode
[ 1944.216826][T10348] dummy0: entered promiscuous mode
[ 1944.248495][T10349] br0: port 1(dummy0) entered blocking state
[ 1944.248755][T10349] br0: port 1(dummy0) entered forwarding state
[ 1946.302205][   T12] dummy0: left allmulticast mode
[ 1946.302484][   T12] dummy0: left promiscuous mode
[ 1946.302685][   T12] br0: port 1(dummy0) entered disabled state