When setting up a new wiki on trunk (as of r93014), I put in for the Memcached config option "localhost:11211" to use my local memcached instance.
On submission, I got kicked back to the top of the same form with this error:
"You have entered an invalid IP address for Memcached: localhost."
In addition, some glitches in the page state:
- lost selections from the extension checkboxes
- caching subform shows off, instead of memcached which I last left it at. (reselecting it shows the localhost:11211 line I had put in before, so the data's still there)
Changing it to "127.0.0.1:11211" resolves this for me, but it sounds like the installer is trying to validate the host portion of memcached lines as raw IP addresses *only*. It's perfectly legit to use hostnames here.
Version: unspecified
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=25855