Status of This Memo

   This document is not an Internet Standards Track specification; it is 
   published for informational purposes.

   This document is a product of the Internet Architecture Board (IAB) 
   and represents information that the IAB has deemed valuable to 
   provide for permanent record.  Documents approved for publication by 
   the IAB are not a candidate for any level of Internet Standard; see 
   Section 2 of RFC 5741.

   Information about the current status of this document, any errata, 
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc9999.
