[ 1773.699262] br0: port 1(dummy0) entered blocking state
[ 1773.699303] br0: port 1(dummy0) entered disabled state
[ 1773.699336] dummy0: entered allmulticast mode
[ 1773.699390] dummy0: entered promiscuous mode
[ 1773.702104] br0: port 1(dummy0) entered blocking state
[ 1773.702135] br0: port 1(dummy0) entered forwarding state
[ 1773.896137] dummy0: left allmulticast mode
[ 1773.896172] dummy0: left promiscuous mode
[ 1773.896202] br0: port 1(dummy0) entered disabled state