[ 1739.217178] br0: port 1(dummy0) entered blocking state
[ 1739.217248] br0: port 1(dummy0) entered disabled state
[ 1739.217311] dummy0: entered allmulticast mode
[ 1739.217397] dummy0: entered promiscuous mode
[ 1739.219927] br0: port 1(dummy0) entered blocking state
[ 1739.219965] br0: port 1(dummy0) entered forwarding state
[ 1739.401771] dummy0: left allmulticast mode
[ 1739.401839] dummy0: left promiscuous mode
[ 1739.401901] br0: port 1(dummy0) entered disabled state