diff --git a/httprl.module b/httprl.module
index 62635d5..7ae7dc1 100644
--- a/httprl.module
+++ b/httprl.module
@@ -90,6 +90,19 @@ function httprl_build_url_self($path = '', $detect_schema = FALSE) {
   }
   elseif (empty($ip)) {
     $ip = empty($_SERVER['SERVER_ADDR']) ? '127.0.0.1' : $_SERVER['SERVER_ADDR'];
+    // Check for IPv6. If IPv6 convert to IPv4 if possible.
+    if (strpos($ip, ':') !== FALSE) {
+      if ($_SERVER['SERVER_ADDR'] == '::1') {
+        $ip = "127.0.0.1";
+      }
+      elseif (preg_match('/^::\d+.\d+.\d+.\d+$/', $ip)) {
+        $ip = substr($ip, 2);
+      }
+      elseif (!empty($_SERVER['HTTP_HOST'])) {
+        // Last option is to use the IP from the host name.
+        $ip = gethostbyname($_SERVER['HTTP_HOST']);
+      }
+    }
   }
 
   // Port.