Add support for geo lookup based on IPs via dev-libs/libmaxminddb

Packages describing “geoip2” as local USE flag

Package “geoip2” Flag Description
app-admin/syslog-ng Add support for geo lookup based on IPs via dev-libs/libmaxminddb
dev-libs/modsecurity Pull in dev-libs/libmaxminddb for use by the SecGeoLookupDb directive.
net-dns/bind Enable GeoIP2 API from MaxMind

All packages providing a “geoip2” USE flag (3)