[ 1745.475766] br0: port 1(dummy0) entered blocking state
[ 1745.475815] br0: port 1(dummy0) entered disabled state
[ 1745.475852] dummy0: entered allmulticast mode
[ 1745.475905] dummy0: entered promiscuous mode
[ 1745.479375] br0: port 1(dummy0) entered blocking state
[ 1745.479438] br0: port 1(dummy0) entered forwarding state
[ 1745.732867] dummy0: left allmulticast mode
[ 1745.732905] dummy0: left promiscuous mode
[ 1745.732987] br0: port 1(dummy0) entered disabled state