[ 1539.419503] br0: port 1(dummy0) entered blocking state
[ 1539.419547] br0: port 1(dummy0) entered disabled state
[ 1539.419574] dummy0: entered allmulticast mode
[ 1539.419641] dummy0: entered promiscuous mode
[ 1539.422415] br0: port 1(dummy0) entered blocking state
[ 1539.422449] br0: port 1(dummy0) entered forwarding state
[ 1539.619788] dummy0: left allmulticast mode
[ 1539.619860] dummy0: left promiscuous mode
[ 1539.619927] br0: port 1(dummy0) entered disabled state