[ 1753.128200] br0: port 1(dummy0) entered blocking state
[ 1753.128238] br0: port 1(dummy0) entered disabled state
[ 1753.128277] dummy0: entered allmulticast mode
[ 1753.128323] dummy0: entered promiscuous mode
[ 1753.131038] br0: port 1(dummy0) entered blocking state
[ 1753.131068] br0: port 1(dummy0) entered forwarding state
[ 1753.306944] dummy0: left allmulticast mode
[ 1753.306973] dummy0: left promiscuous mode
[ 1753.307007] br0: port 1(dummy0) entered disabled state