4. Acknowledgements

   This document reflects a discussion that was held on the MPOWR
   mailing list in December 2003 and January 2004.  In particular, the
   following people contributed ideas that influenced this document:
   Harald Alvestrand, Dave Crocker, James Kempf, and John Klensin.

   This document was written with the xml2rfc tool described in RFC 2629
   [RFC2629].