E.g. pgrep sheep 3039 3040 lsof -p 3039 | grep -c TCP 22 I start a guest lsof -p 3039 | grep -c TCP 61 I shutdown the guest and the number of fd doesn't decrease lsof -p 3039 | grep -c TCP 61 Is that correct? Sheepdog daemon version 0.8.0_343_g85f1e00