[ 1976.699372][ T1423] br0: port 1(dummy0) entered blocking state
[ 1976.699611][ T1423] br0: port 1(dummy0) entered disabled state
[ 1976.699824][ T1423] dummy0: entered allmulticast mode
[ 1976.700843][ T1423] dummy0: entered promiscuous mode
[ 1976.728016][ T1424] br0: port 1(dummy0) entered blocking state
[ 1976.728257][ T1424] br0: port 1(dummy0) entered forwarding state
[ 1978.675738][   T68] dummy0: left allmulticast mode
[ 1978.676767][   T68] dummy0: left promiscuous mode
[ 1978.677127][   T68] br0: port 1(dummy0) entered disabled state