Last modified: 2013-04-22 16:16:48 UTC
Currently, IPv6 editors are caught by the AbuseFilter just fine, see <http://en.wikipedia.org/wiki/Special:AbuseLog/7256752>. However, even when such an editor triggers a filter action, that address's AbuseLog remains completely empty: <http://en.wikipedia.org/w/index.php?title=Special:AbuseLog&wpSearchUser=2620%3A0%3A1000%3A1601%3ABAAC%3A6FFF%3AFE95%3A53AD>. I have looked at several recent filter hits from IPv6 addresses and all show the same effect. Anonymous editing from IPv6 addresses currently constitute 0.1-0.5% of filter hits, by my quick estimate, so it's not a big deal *yet*.
Bug confirmed as wiki-independent at http://www.mediawiki.org/wiki/Special:AbuseLog?title=Special%3AAbuseLog&wpSearchUser=2A01%3AE34%3AEE34%3AF830%3AD69A%3A20FF%3AFE73%3AB5CC&wpSearchFilter=&wpSearchTitle=.
Line 212, special/SpecialAbuseLog.php: $conds[] = 'afl_ip=afl_user_text'; (added in r68534) But, a sample IPv6 row from my testing: afl_user_text = 0:0:0:0:0:0:0:1 afl_ip = ::1
Note that this works if you check via the API: https://en.wikipedia.org/w/api.php?action=query&list=abuselog&afluser=2620:0:1000:1601:BAAC:6FFF:FE95:53AD
Fixed in https://gerrit.wikimedia.org/r/55826 (needs review)
Chris merged my patch.