[ 1973.720604][T28251] br0: port 1(dummy0) entered blocking state
[ 1973.721214][T28251] br0: port 1(dummy0) entered disabled state
[ 1973.721428][T28251] dummy0: entered allmulticast mode
[ 1973.722412][T28251] dummy0: entered promiscuous mode
[ 1973.750098][T28252] br0: port 1(dummy0) entered blocking state
[ 1973.750375][T28252] br0: port 1(dummy0) entered forwarding state
[ 1975.647363][   T69] dummy0: left allmulticast mode
[ 1975.648346][   T69] dummy0: left promiscuous mode
[ 1975.648625][   T69] br0: port 1(dummy0) entered disabled state