[ 1997.195021][T14086] br0: port 1(dummy0) entered blocking state
[ 1997.195266][T14086] br0: port 1(dummy0) entered disabled state
[ 1997.195501][T14086] dummy0: entered allmulticast mode
[ 1997.196422][T14086] dummy0: entered promiscuous mode
[ 1997.220090][T14087] br0: port 1(dummy0) entered blocking state
[ 1997.220272][T14087] br0: port 1(dummy0) entered forwarding state
[ 1999.275267][   T12] dummy0: left allmulticast mode
[ 1999.275580][   T12] dummy0: left promiscuous mode
[ 1999.275825][   T12] br0: port 1(dummy0) entered disabled state