[ 1848.419290] br0: port 1(dummy0) entered blocking state
[ 1848.419335] br0: port 1(dummy0) entered disabled state
[ 1848.419375] dummy0: entered allmulticast mode
[ 1848.419428] dummy0: entered promiscuous mode
[ 1848.421901] br0: port 1(dummy0) entered blocking state
[ 1848.421935] br0: port 1(dummy0) entered forwarding state
[ 1848.606826] dummy0: left allmulticast mode
[ 1848.606870] dummy0: left promiscuous mode
[ 1848.606901] br0: port 1(dummy0) entered disabled state