Use common name instead of IP address as listening address for IPSec gateway

certidude/templates/strongswan-site-to-client.conf

@@ -16,7 +16,7 @@ conn site-to-clients
 	auto=add
 	right=%any # Allow connecting from any IP address
 	rightsourceip={{subnet}} # Serve virtual IP-s from this pool
-	left={{local}} # Gateway IP address
+	left={{common_name}} # Gateway IP address
 	leftcert={{certificate_path}} # Gateway certificate
 {% if route %}
 {% if route | length == 1 %}