Add ip forward default
diff --git a/aardvark.yaml b/aardvark.yaml
index b78abe6..0103602 100644
--- a/aardvark.yaml
+++ b/aardvark.yaml
@@ -4,6 +4,8 @@
 # Which backend to proxy to if request is kosher
 proxy_url: "http://localhost:8009/"
 
+# Default IP forward header from httpd
+ipheader: x-forwarded-for
 
 #####################
 # Aardvark rule-set #