Description of problem:
jwhois.conf contain some regular expressions to match IPv6 addresses and select
relatedwhois database.

Version-Release number of selected component (if applicable):
jwhois-3.2.3-4 (from devel)


How reproducible:
always


Steps to Reproduce:
1. Add a entry to /etc/jwhois.conf like 
        # 2A01:0000::/16
        "^2A01:[A-F0-9][A-F0-9][A-F0-9][A-F0-9]:.+" = "whois.ripe.net";
(this is according to newer data on IANA)

2. Try 
$ whois 2a01:800::/23
  
Actual results:
$ whois 2a01:800::/23|grep Querying
[Querying whois.internic.net]

Expected results:
Same result with leading "0" in the second address part:
$ whois 2a01:0800::/23|grep Querying
[Querying whois.ripe.net]


Additional info:
Looks like the solution to catch IPv6 addresses should be only a temporary one
and replaced by CIDR lookup like already implemented for IPv4.
See also https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=143682#c0

I would suggest to take a look at my project ipv6calc
http://www.deepspace6.net/projects/ipv6calc.html

I have already implemented the registry selection by database. You will find
also code for "decompressing" IPv6 addresses and could use the database file
http://cvs.deepspace6.net/view/ipv6calc/databases/ipv6-assignment/dbipv6addr_assignment.h
to generate proper CIDR data for jwhois.conf from current data taken from the
registries.

Hopefully, one has time to implement this in the near future. Otherwise, I had
to look for some free time...