logstash/logstash — pull request #568 by jlambert121 (2013-08-01 08:47:55+00:00)
Title: grok pattern for ipv6

Add grok pattern for IPV6 based on this thread:
https://groups.google.com/forum/#!msg/logstash-users/5a9t__Z8Scg/qwNA5qh7xFYJ

Also Jira ticket: https://logstash.jira.com/browse/LOGSTASH-1115