[ 1657.182264] br0: port 1(dummy0) entered blocking state
[ 1657.182303] br0: port 1(dummy0) entered disabled state
[ 1657.182347] dummy0: entered allmulticast mode
[ 1657.182403] dummy0: entered promiscuous mode
[ 1657.185202] br0: port 1(dummy0) entered blocking state
[ 1657.185236] br0: port 1(dummy0) entered forwarding state
[ 1657.370211] dummy0: left allmulticast mode
[ 1657.370247] dummy0: left promiscuous mode
[ 1657.370271] br0: port 1(dummy0) entered disabled state