[ 1767.077392] br0: port 1(dummy0) entered blocking state
[ 1767.077442] br0: port 1(dummy0) entered disabled state
[ 1767.077476] dummy0: entered allmulticast mode
[ 1767.077535] dummy0: entered promiscuous mode
[ 1767.081270] br0: port 1(dummy0) entered blocking state
[ 1767.081304] br0: port 1(dummy0) entered forwarding state
[ 1767.377718] dummy0: left allmulticast mode
[ 1767.377811] dummy0: left promiscuous mode
[ 1767.377879] br0: port 1(dummy0) entered disabled state