Redmine

Transitioning some IP space documentation from mediawiki to Redmine's wiki system. IPv4 addresses are handled pretty nicely ([ [xx.xx.xx.xx/24] ] turns into xxxxxxxx24, which is fine), but the colons are confusing the Textile engine ([ [2001:xxxx:xxxx:xxxx:xxxx::/64] ] doesn't link at all).

Is there some way to disable the textile engine on a page, or do something else I can do to link to pages with colons in the title?