Actually I cannot say. I haven't seen this problem in a while. And /etc/init.d/nfs-common start does
PIPEFS_MOUNTPOINT=/run/rpc_pipefs : mkdir -p "$PIPEFS_MOUNTPOINT" : modprobe sunrpc nfs nfsd mount -t rpc_pipefs rpc_pipefs $PIPEFS_MOUNTPOINT providing the expected /run/rpc_pipefs/nfs, as it seems. Regards Harri