Index: /tools/gformat.py
===================================================================
--- /tools/gformat.py	(revision 10463)
+++ /tools/gformat.py	(revision 10464)
@@ -506,11 +506,12 @@
 #
 captive_portal_interfaces="{{ autogen_dhcp_interfaces }}"
+externalif="{{ externalif }}"
 
 pf_rules="/etc/pf.hybrid.conf"
 {% if service_ileiden -%}
 # Service iLeiden
-pf_flags="-D ext_if={{ externalif }} -D captive_portal_interfaces=${captive_portal_interfaces:-'none'} -D publicnat=80,443"
+pf_flags="-D ext_if=${externalif:-'vr0'} -D captive_portal_interfaces=${captive_portal_interfaces:-'none'} -D publicnat=80,443"
 {% else -%}
-pf_flags="-D ext_if={{ externalif }} -D captive_portal_interfaces=${captive_portal_interfaces:-'none'} -D publicnat=0"
+pf_flags="-D ext_if=${externalif:-'vr0'} -D captive_portal_interfaces=${captive_portal_interfaces:-'none'} -D publicnat=0"
 {% endif -%}