[ 1742.783718] br0: port 1(dummy0) entered blocking state
[ 1742.783745] br0: port 1(dummy0) entered disabled state
[ 1742.783765] dummy0: entered allmulticast mode
[ 1742.783807] dummy0: entered promiscuous mode
[ 1742.787017] br0: port 1(dummy0) entered blocking state
[ 1742.787036] br0: port 1(dummy0) entered forwarding state
[ 1742.997518] dummy0: left allmulticast mode
[ 1742.997549] dummy0: left promiscuous mode
[ 1742.997633] br0: port 1(dummy0) entered disabled state