[ 1999.928283][ T8327] br0: port 1(dummy0) entered blocking state
[ 1999.928488][ T8327] br0: port 1(dummy0) entered disabled state
[ 1999.928659][ T8327] dummy0: entered allmulticast mode
[ 1999.929663][ T8327] dummy0: entered promiscuous mode
[ 1999.963538][ T8328] br0: port 1(dummy0) entered blocking state
[ 1999.963813][ T8328] br0: port 1(dummy0) entered forwarding state
[ 2001.999548][   T12] dummy0: left allmulticast mode
[ 2001.999870][   T12] dummy0: left promiscuous mode
[ 2002.000085][   T12] br0: port 1(dummy0) entered disabled state