[ 1791.250482] br0: port 1(dummy0) entered blocking state
[ 1791.250531] br0: port 1(dummy0) entered disabled state
[ 1791.250565] dummy0: entered allmulticast mode
[ 1791.250619] dummy0: entered promiscuous mode
[ 1791.254229] br0: port 1(dummy0) entered blocking state
[ 1791.254290] br0: port 1(dummy0) entered forwarding state
[ 1791.515315] dummy0: left allmulticast mode
[ 1791.515405] dummy0: left promiscuous mode
[ 1791.515475] br0: port 1(dummy0) entered disabled state