In the configuration files, it mentions how to build extra modules for a normal Tarball instalation ie: ./configure --enable-extras=m_geoip.cpp but in gentoo there is no such option, and there is no use flag pertaining to this.
Nobody claimed that extra, it will be included in next revision. Thanks for reporting!
Added geoip use flag to =net-irc/inspircd-2.0.6_rc1.ebuild. + 23 Jun 2012; Chema Alonso <nimiux@gentoo.org> inspircd-2.0.6_rc1.ebuild, + +files/inspircd-2.0.6_rc1-gcc-4.7.patch, metadata.xml: + Fix compile for gcc-4.7 wrt bug #421409. Add geoip use flag wrt bug #413747. + Update longdescription, maintainer info and use flags in metadata. +