[ 1868.205830] br0: port 1(dummy0) entered blocking state
[ 1868.205896] br0: port 1(dummy0) entered disabled state
[ 1868.205964] dummy0: entered allmulticast mode
[ 1868.206041] dummy0: entered promiscuous mode
[ 1868.209230] br0: port 1(dummy0) entered blocking state
[ 1868.209258] br0: port 1(dummy0) entered forwarding state
[ 1868.454852] dummy0: left allmulticast mode
[ 1868.454885] dummy0: left promiscuous mode
[ 1868.454918] br0: port 1(dummy0) entered disabled state