[ 1778.197841] br0: port 1(dummy0) entered blocking state
[ 1778.197879] br0: port 1(dummy0) entered disabled state
[ 1778.197901] dummy0: entered allmulticast mode
[ 1778.197936] dummy0: entered promiscuous mode
[ 1778.201295] br0: port 1(dummy0) entered blocking state
[ 1778.201316] br0: port 1(dummy0) entered forwarding state
[ 1778.452978] dummy0: left allmulticast mode
[ 1778.453008] dummy0: left promiscuous mode
[ 1778.453027] br0: port 1(dummy0) entered disabled state