From: Marco d'Itri <md@linux.it>
Subject: use the "vrt" (non-strict) ABI

--- a/src/vmod_geoip2.vcc
+++ b/src/vmod_geoip2.vcc
@@ -26,6 +26,7 @@
 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 $Module geoip2 3 "Varnish GeoIP2 Lookup Module"
+$ABI vrt
 
 DESCRIPTION
 ===========
