[ 1774.124270] br0: port 1(dummy0) entered blocking state
[ 1774.124346] br0: port 1(dummy0) entered disabled state
[ 1774.124420] dummy0: entered allmulticast mode
[ 1774.124504] dummy0: entered promiscuous mode
[ 1774.128256] br0: port 1(dummy0) entered blocking state
[ 1774.128288] br0: port 1(dummy0) entered forwarding state
[ 1774.397757] dummy0: left allmulticast mode
[ 1774.397796] dummy0: left promiscuous mode
[ 1774.397891] br0: port 1(dummy0) entered disabled state