"This document specifies how the features of the Service Location Protocol@ Version 2 allow for vendor extensibility safely@ with no possibility of collisions. The specification introduces a new SLPv2 extension: The Vendor Opaque Extension. While proprietary protocol extensions are not encouraged by IETF standards@ it is important that they not hinder interoperability of compliant implementations when they are undertaken. This document udpates RFC 2608@ ""The Service Location Protocol."""