[ 1855.609805] br0: port 1(dummy0) entered blocking state
[ 1855.609851] br0: port 1(dummy0) entered disabled state
[ 1855.609886] dummy0: entered allmulticast mode
[ 1855.609944] dummy0: entered promiscuous mode
[ 1855.613504] br0: port 1(dummy0) entered blocking state
[ 1855.613537] br0: port 1(dummy0) entered forwarding state
[ 1855.861397] dummy0: left allmulticast mode
[ 1855.861436] dummy0: left promiscuous mode
[ 1855.861472] br0: port 1(dummy0) entered disabled state