[ 1693.704438] br0: port 1(dummy0) entered blocking state
[ 1693.704484] br0: port 1(dummy0) entered disabled state
[ 1693.704522] dummy0: entered allmulticast mode
[ 1693.704580] dummy0: entered promiscuous mode
[ 1693.707992] br0: port 1(dummy0) entered blocking state
[ 1693.708061] br0: port 1(dummy0) entered forwarding state
[ 1693.940297] dummy0: left allmulticast mode
[ 1693.940332] dummy0: left promiscuous mode
[ 1693.940366] br0: port 1(dummy0) entered disabled state