[ 1972.789604][ T6956] br0: port 1(dummy0) entered blocking state
[ 1972.789791][ T6956] br0: port 1(dummy0) entered disabled state
[ 1972.789964][ T6956] dummy0: entered allmulticast mode
[ 1972.790820][ T6956] dummy0: entered promiscuous mode
[ 1972.812682][ T6957] br0: port 1(dummy0) entered blocking state
[ 1972.812955][ T6957] br0: port 1(dummy0) entered forwarding state
[ 1974.806308][   T69] dummy0: left allmulticast mode
[ 1974.806944][   T69] dummy0: left promiscuous mode
[ 1974.808121][   T69] br0: port 1(dummy0) entered disabled state