[ 1963.713373][  T677] br0: port 1(dummy0) entered blocking state
[ 1963.713568][  T677] br0: port 1(dummy0) entered disabled state
[ 1963.713734][  T677] dummy0: entered allmulticast mode
[ 1963.714666][  T677] dummy0: entered promiscuous mode
[ 1963.741184][  T678] br0: port 1(dummy0) entered blocking state
[ 1963.741556][  T678] br0: port 1(dummy0) entered forwarding state
[ 1965.622007][   T12] dummy0: left allmulticast mode
[ 1965.623005][   T12] dummy0: left promiscuous mode
[ 1965.623237][   T12] br0: port 1(dummy0) entered disabled state