[ 1696.059192] br0: port 1(dummy0) entered blocking state
[ 1696.059234] br0: port 1(dummy0) entered disabled state
[ 1696.059272] dummy0: entered allmulticast mode
[ 1696.059322] dummy0: entered promiscuous mode
[ 1696.062119] br0: port 1(dummy0) entered blocking state
[ 1696.062158] br0: port 1(dummy0) entered forwarding state
[ 1696.256400] dummy0: left allmulticast mode
[ 1696.256462] dummy0: left promiscuous mode
[ 1696.256497] br0: port 1(dummy0) entered disabled state