[ 1683.016826] br0: port 1(dummy0) entered blocking state
[ 1683.016871] br0: port 1(dummy0) entered disabled state
[ 1683.016904] dummy0: entered allmulticast mode
[ 1683.016959] dummy0: entered promiscuous mode
[ 1683.019827] br0: port 1(dummy0) entered blocking state
[ 1683.019861] br0: port 1(dummy0) entered forwarding state
[ 1683.218047] dummy0: left allmulticast mode
[ 1683.218084] dummy0: left promiscuous mode
[ 1683.218117] br0: port 1(dummy0) entered disabled state