*** Nits/editorial comments ***:
-- IDNits indicates some unused and obsoleted references. Please check.
Found one unused reference and have removed it.
Seems like there were more than one. From IDNits:
== Missing Reference: 'IRR' is mentioned on line 92, but not defined
== Unused Reference: 'RFC2409' is defined on line 585, but no explicit
reference was found in the text
== Unused Reference: 'RFC3547' is defined on line 588, but no explicit
reference was found in the text
** Obsolete normative reference: RFC 2385 (Obsoleted by RFC 5925)
-- Obsolete informational reference (is this intentional?): RFC 2409
(Obsoleted by RFC 4306)
-- Obsolete informational reference (is this intentional?): RFC 3547
(Obsoleted by RFC 6407)