Last modified: 2012-06-23 22:39:05 UTC
http://en.wikipedia.org/wiki/Special:Contributions/200:0DB8:0016:0005:0ACE:0BD1:07BE Above is a registered user that looks like an IPv6 address. It is actually invalid: http://ipduh.com/ipv6/whois/?200:0DB8:0016:0005:0ACE:0BD1:07BE Perhaps mediawiki should prevent such username creations. Restricting the use of ":" in usernames may be one simple solution.
Fixed at https://gerrit.wikimedia.org/r/12782