[ 1715.464284] br0: port 1(dummy0) entered blocking state
[ 1715.464336] br0: port 1(dummy0) entered disabled state
[ 1715.464370] dummy0: entered allmulticast mode
[ 1715.464420] dummy0: entered promiscuous mode
[ 1715.468134] br0: port 1(dummy0) entered blocking state
[ 1715.468196] br0: port 1(dummy0) entered forwarding state
[ 1715.743194] dummy0: left allmulticast mode
[ 1715.743238] dummy0: left promiscuous mode
[ 1715.743264] br0: port 1(dummy0) entered disabled state