This is an older version of an Internet-Draft that was ultimately published as RFC 8216. This document is an Internet-Draft (I-D). Anyone may submit an I-D to the IETF. This I-D is not endorsed by the IETF and has no formal standing in the IETF standards process. Informational R. Pantos, Ed. Internet-Draft W. May Intended status: Informational Apple Inc. Expires: April 18, 2013 October 15, 2012 HT