[ 1840.339293] br0: port 1(dummy0) entered blocking state
[ 1840.339334] br0: port 1(dummy0) entered disabled state
[ 1840.339369] dummy0: entered allmulticast mode
[ 1840.339425] dummy0: entered promiscuous mode
[ 1840.342991] br0: port 1(dummy0) entered blocking state
[ 1840.343068] br0: port 1(dummy0) entered forwarding state
[ 1840.614118] dummy0: left allmulticast mode
[ 1840.614187] dummy0: left promiscuous mode
[ 1840.614221] br0: port 1(dummy0) entered disabled state