[ 1623.348493] br0: port 1(dummy0) entered blocking state
[ 1623.348568] br0: port 1(dummy0) entered disabled state
[ 1623.348634] dummy0: entered allmulticast mode
[ 1623.348719] dummy0: entered promiscuous mode
[ 1623.351745] br0: port 1(dummy0) entered blocking state
[ 1623.351775] br0: port 1(dummy0) entered forwarding state
[ 1623.554902] dummy0: left allmulticast mode
[ 1623.554939] dummy0: left promiscuous mode
[ 1623.555029] br0: port 1(dummy0) entered disabled state