diff --git a/misc/build.func b/misc/build.func
index dbc83a3e..e2baf4e0 100644
--- a/misc/build.func
+++ b/misc/build.func
@@ -335,6 +335,7 @@ base_settings() {
   NET="dhcp"
   IPv6="auto"
   GATE=""
+  IPv6GW=""
   APT_CACHER=""
   APT_CACHER_IP=""
   DISABLEIP6="no"