[ 1893.199533] br0: port 1(dummy0) entered blocking state
[ 1893.199585] br0: port 1(dummy0) entered disabled state
[ 1893.199621] dummy0: entered allmulticast mode
[ 1893.199676] dummy0: entered promiscuous mode
[ 1893.203180] br0: port 1(dummy0) entered blocking state
[ 1893.203213] br0: port 1(dummy0) entered forwarding state
[ 1893.436940] dummy0: left allmulticast mode
[ 1893.436972] dummy0: left promiscuous mode
[ 1893.436995] br0: port 1(dummy0) entered disabled state