[ 1549.787495] br0: port 1(dummy0) entered blocking state
[ 1549.787563] br0: port 1(dummy0) entered disabled state
[ 1549.787634] dummy0: entered allmulticast mode
[ 1549.787718] dummy0: entered promiscuous mode
[ 1549.790405] br0: port 1(dummy0) entered blocking state
[ 1549.790441] br0: port 1(dummy0) entered forwarding state
[ 1549.967358] dummy0: left allmulticast mode
[ 1549.967390] dummy0: left promiscuous mode
[ 1549.967489] br0: port 1(dummy0) entered disabled state