[ 1927.373790] br0: port 1(dummy0) entered blocking state
[ 1927.373819] br0: port 1(dummy0) entered disabled state
[ 1927.373842] dummy0: entered allmulticast mode
[ 1927.373879] dummy0: entered promiscuous mode
[ 1927.377414] br0: port 1(dummy0) entered blocking state
[ 1927.377438] br0: port 1(dummy0) entered forwarding state
[ 1927.650926] dummy0: left allmulticast mode
[ 1927.650961] dummy0: left promiscuous mode
[ 1927.650985] br0: port 1(dummy0) entered disabled state