[ 1548.891156] br0: port 1(dummy0) entered blocking state
[ 1548.891228] br0: port 1(dummy0) entered disabled state
[ 1548.891292] dummy0: entered allmulticast mode
[ 1548.891386] dummy0: entered promiscuous mode
[ 1548.893876] br0: port 1(dummy0) entered blocking state
[ 1548.893910] br0: port 1(dummy0) entered forwarding state
[ 1549.060150] dummy0: left allmulticast mode
[ 1549.060179] dummy0: left promiscuous mode
[ 1549.060205] br0: port 1(dummy0) entered disabled state