[ 2153.900515][ T8658] br0: port 1(dummy0) entered blocking state
[ 2153.900740][ T8658] br0: port 1(dummy0) entered disabled state
[ 2153.900951][ T8658] dummy0: entered allmulticast mode
[ 2153.907824][ T8658] dummy0: entered promiscuous mode
[ 2153.936071][ T8659] br0: port 1(dummy0) entered blocking state
[ 2153.936459][ T8659] br0: port 1(dummy0) entered forwarding state
[ 2155.899917][   T12] dummy0: left allmulticast mode
[ 2155.900894][   T12] dummy0: left promiscuous mode
[ 2155.901143][   T12] br0: port 1(dummy0) entered disabled state