[ 1542.187599] br0: port 1(dummy0) entered blocking state
[ 1542.187647] br0: port 1(dummy0) entered disabled state
[ 1542.187705] dummy0: entered allmulticast mode
[ 1542.187782] dummy0: entered promiscuous mode
[ 1542.190634] br0: port 1(dummy0) entered blocking state
[ 1542.190668] br0: port 1(dummy0) entered forwarding state
[ 1542.383032] dummy0: left allmulticast mode
[ 1542.383068] dummy0: left promiscuous mode
[ 1542.383108] br0: port 1(dummy0) entered disabled state