Internet Draft

Internet Drafts (IDs) are a series of documents published by the IETF. They are drafts for RFCs. They have a validity of only 6 months, after which the IETF deletes them, although expired IDs can be found on a number of sites around the Internet.

They are given names of the following format: draft-<author>-<name>-<sequence number 00, 01, etc>.txt

This site is a good archive of IDs: http://www.watersprings.org/pub/id/