[ 2000.735212][T30989] br0: port 1(dummy0) entered blocking state
[ 2000.735433][T30989] br0: port 1(dummy0) entered disabled state
[ 2000.735612][T30989] dummy0: entered allmulticast mode
[ 2000.736530][T30989] dummy0: entered promiscuous mode
[ 2000.768059][T30990] br0: port 1(dummy0) entered blocking state
[ 2000.768260][T30990] br0: port 1(dummy0) entered forwarding state
[ 2002.708183][   T12] dummy0: left allmulticast mode
[ 2002.708372][   T12] dummy0: left promiscuous mode
[ 2002.708608][   T12] br0: port 1(dummy0) entered disabled state