diff --git a/box/scripts/box.iptables b/box/scripts/box.iptables
index f0d0db9..f9927f6 100755
--- a/box/scripts/box.iptables
+++ b/box/scripts/box.iptables
@@ -111,6 +111,7 @@ intranet6=(
   2001:20::/28
   2001:db8::/32
   2002::/16
+  fc00::/7
   fe80::/10
   ff00::/8
 )