Stop the stupidity of RFC 5952, Section 4.3, where it states that ONLY
lower case alphabetics are valid for hexadecimal digits in IPv6 addresses. Upper-case or capital letters are now forbidden!
This RFC flies in the face of 50+ years of computer industry, science, and computational theory history, where the alphabetic digits for radix bases greater than 10 are traditionally upper case, with lower case reserved for use in base 37 numbers and higher. If any change is to be made, then it should be from upper-case only to allowing both cases, or even mixed-case from digit to digit. Disallowing upper-case digits as forbidden is a real bonehead move in my opinion.
The discussion on the issue is based the IETF errata section for the RFC (Errata #2656), and is taking place on the IPv6 mailing list: http://www.ietf.org/mail-archive/web/ipv6/current/maillist.html
- Topic "[Technical Errata Reported] RFC5952 (2656)." Please [also] make your comments there.