Is anyone using it in production already, and what are your experiences with it?
Does CloudMin, and VirtualMin support IPV6 yet?
Are there any problems with services like Apache, MySQL, Exim, etc that we should be aware of ?
Support for ipv6 was added to Virtualmin some time ago for managine daemons using ipv6, and support for running Webmin on ipv6 was added in the most recent Webmin version (1.530). I don’t believe the new version of Webmin is available yet via the Virtualmin software repository, but once it is, give it a shot and see if that offers the support you’re after.