[ 1905.980535] br0: port 1(dummy0) entered blocking state
[ 1905.980615] br0: port 1(dummy0) entered disabled state
[ 1905.980681] dummy0: entered allmulticast mode
[ 1905.980776] dummy0: entered promiscuous mode
[ 1905.984204] br0: port 1(dummy0) entered blocking state
[ 1905.984240] br0: port 1(dummy0) entered forwarding state
[ 1906.225125] dummy0: left allmulticast mode
[ 1906.225160] dummy0: left promiscuous mode
[ 1906.225189] br0: port 1(dummy0) entered disabled state