I know that MySQL does not support IPV6 in 5.0/5.1 and they cannot give an estimate as to when this will happen. Does MariaDB support IPV6?
Answer Answered by Ian Gilfillan in this comment.
As of February 2016, mostly. MariaDB can bind to ipv4 or ipv6 hostnames, and supports the following related functions:
However, there are still a few unresolved ipv6-related issues: