Update to this. If you have an IDL from your home or another country, and your DL, you CAN still drive in Qatar (until you get an RP and Qatari DL).

BUT, you cannot come to Qatar, and apply at the IDL office for an IDL to drive in Qatar. The IDL does NOT work in the outside country that you purchase it in. It is always better to get the IDL in your home country, or outside of the country that you intend to move or travel to.

NOTE: An IDL NO LONGER allows one to drive inside one's own country without a local DL. Most countries have driving laws that exclude an IDL from being used by a Citizen of that country, within its territorial borders.