This document is an Internet Draft. Note that other groups may also distribute working documents as Internet Drafts.
Internet Drafts are draft documents valid for a maximum of six months.
Internet Drafts may be updated, replaced, or obsoleted by other docu- ments at any time. Distribution of this memo is unlimited. This applicability statement provides the supporting motivation for that declaration. A partial implementation was deployed on three Unix boxes for a few months in 1988. It was therefore not possible to detect that a router was restarted.