[ 1993.125302] br0: port 1(dummy0) entered blocking state
[ 1993.125341] br0: port 1(dummy0) entered disabled state
[ 1993.125379] dummy0: entered allmulticast mode
[ 1993.125429] dummy0: entered promiscuous mode
[ 1993.128684] br0: port 1(dummy0) entered blocking state
[ 1993.128746] br0: port 1(dummy0) entered forwarding state
[ 1993.348838] dummy0: left allmulticast mode
[ 1993.348900] dummy0: left promiscuous mode
[ 1993.348986] br0: port 1(dummy0) entered disabled state