[  684.424364] br0: port 1(dummy0) entered blocking state
[  684.424433] br0: port 1(dummy0) entered disabled state
[  684.424486] dummy0: entered allmulticast mode
[  684.424558] dummy0: entered promiscuous mode
[  684.428435] br0: port 1(dummy0) entered blocking state
[  684.428459] br0: port 1(dummy0) entered forwarding state
[  684.696605] dummy0: left allmulticast mode
[  684.696640] dummy0: left promiscuous mode
[  684.696662] br0: port 1(dummy0) entered disabled state