[ 1971.992966][ T9495] br0: port 1(dummy0) entered blocking state
[ 1971.993202][ T9495] br0: port 1(dummy0) entered disabled state
[ 1971.993418][ T9495] dummy0: entered allmulticast mode
[ 1971.994514][ T9495] dummy0: entered promiscuous mode
[ 1972.016553][ T9496] br0: port 1(dummy0) entered blocking state
[ 1972.016740][ T9496] br0: port 1(dummy0) entered forwarding state
[ 1973.946327][   T70] dummy0: left allmulticast mode
[ 1973.946539][   T70] dummy0: left promiscuous mode
[ 1973.946765][   T70] br0: port 1(dummy0) entered disabled state