[ 1840.262939] br0: port 1(dummy0) entered blocking state
[ 1840.262993] br0: port 1(dummy0) entered disabled state
[ 1840.263026] dummy0: entered allmulticast mode
[ 1840.263079] dummy0: entered promiscuous mode
[ 1840.266871] br0: port 1(dummy0) entered blocking state
[ 1840.266934] br0: port 1(dummy0) entered forwarding state
[ 1840.532063] dummy0: left allmulticast mode
[ 1840.532104] dummy0: left promiscuous mode
[ 1840.532144] br0: port 1(dummy0) entered disabled state