I have reviewed this document as part of the security directorate's 


ongoing effort to review all IETF documents being processed by the IESG. 


 These comments were written primarily for the benefit of the security 


area directors.  Document editors and WG chairs should treat these 


comments just like any other last call comments.






My heart sank when I was assigned this document because it's 950 pages, 


but 940ish of the pages are a registry ;)






This document provides procedures to update the IANA Language Subtag 


Registry.  The Subtags are copied from ISO documents.  I can't think of 


any security concerns for the procedures themselves.  The Security 


Considerations section points to draft-ietf-ltru-4646bis-21.txt for any 


issue with tags themselves.






Assuming the copy from the ISO document was exact, I support this 


document becoming an RFC




spt