[ 1792.172393] br0: port 1(dummy0) entered blocking state
[ 1792.172468] br0: port 1(dummy0) entered disabled state
[ 1792.172538] dummy0: entered allmulticast mode
[ 1792.172631] dummy0: entered promiscuous mode
[ 1792.175440] br0: port 1(dummy0) entered blocking state
[ 1792.175477] br0: port 1(dummy0) entered forwarding state
[ 1792.369757] dummy0: left allmulticast mode
[ 1792.369831] dummy0: left promiscuous mode
[ 1792.369920] br0: port 1(dummy0) entered disabled state