[ 1693.634284] br0: port 1(dummy0) entered blocking state
[ 1693.634355] br0: port 1(dummy0) entered disabled state
[ 1693.634423] dummy0: entered allmulticast mode
[ 1693.634507] dummy0: entered promiscuous mode
[ 1693.637259] br0: port 1(dummy0) entered blocking state
[ 1693.637320] br0: port 1(dummy0) entered forwarding state
[ 1693.821323] dummy0: left allmulticast mode
[ 1693.821360] dummy0: left promiscuous mode
[ 1693.821415] br0: port 1(dummy0) entered disabled state