From f0452891a74e99f75dd98f5b691eaf405e4b73fc Mon Sep 17 00:00:00 2001
From: Aki Tuomi <cmouse@cmouse.fi>
Date: Fri, 27 Nov 2015 12:26:46 +0200
Subject: [PATCH] Do not cache unknown responses

---
 modules/geoipbackend/geoipbackend.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/modules/geoipbackend/geoipbackend.cc b/modules/geoipbackend/geoipbackend.cc
index 773efacd4..db3f55a11 100644
--- a/modules/geoipbackend/geoipbackend.cc
+++ b/modules/geoipbackend/geoipbackend.cc
@@ -571,6 +571,8 @@ string GeoIPBackend::queryGeoIP(const string &ip, bool v6, GeoIPQueryAttribute a
     std::transform(ret.begin(), ret.end(), ret.begin(), ::tolower);
     break;
   }
+
+  if (ret == "unknown") gl->netmask = (v6?128:32); // prevent caching
   return ret;
 }
 
-- 
2.40.0