[ 1985.505079] br0: port 1(dummy0) entered blocking state
[ 1985.505129] br0: port 1(dummy0) entered disabled state
[ 1985.505164] dummy0: entered allmulticast mode
[ 1985.505219] dummy0: entered promiscuous mode
[ 1985.508530] br0: port 1(dummy0) entered blocking state
[ 1985.508567] br0: port 1(dummy0) entered forwarding state
[ 1985.766797] dummy0: left allmulticast mode
[ 1985.766828] dummy0: left promiscuous mode
[ 1985.766857] br0: port 1(dummy0) entered disabled state