[ 1746.090450] br0: port 1(dummy0) entered blocking state
[ 1746.090496] br0: port 1(dummy0) entered disabled state
[ 1746.090539] dummy0: entered allmulticast mode
[ 1746.090600] dummy0: entered promiscuous mode
[ 1746.094059] br0: port 1(dummy0) entered blocking state
[ 1746.094128] br0: port 1(dummy0) entered forwarding state
[ 1746.318378] dummy0: left allmulticast mode
[ 1746.318415] dummy0: left promiscuous mode
[ 1746.318445] br0: port 1(dummy0) entered disabled state