[ 1733.248245] br0: port 1(dummy0) entered blocking state
[ 1733.248297] br0: port 1(dummy0) entered disabled state
[ 1733.248347] dummy0: entered allmulticast mode
[ 1733.248413] dummy0: entered promiscuous mode
[ 1733.251986] br0: port 1(dummy0) entered blocking state
[ 1733.252008] br0: port 1(dummy0) entered forwarding state
[ 1733.535234] dummy0: left allmulticast mode
[ 1733.535255] dummy0: left promiscuous mode
[ 1733.535273] br0: port 1(dummy0) entered disabled state