RFC 4848, "Domain-Based Application Service Location Using URIs and the Dynamic Delegation Discovery Service (DDDS)", April 2007Source of RFC: IETF - NON WORKING GROUP
Area Assignment: app
Errata ID: 2862
Status: Held for Document Update
Reported By: Mykyta Yevstifeyev
Date Reported: 2011-07-14
Held for Document Update by: Pete Resnick
Section 4.6 says:
u-naptr-regexp = "!.*!"<URI>"!"
It should say:
u-naptr-regexp = "!.*!" URI "!"
As this is ABNF, its productions need not be enclosed in <>. They are only allowed when defining "prose values", which "URI" isn't. "URI" is an actual ABNF production from RFC 3986/