Add new option "additional_prefix6" and decrease ipv4 client network to /18

site.conf

@@ -10,9 +10,12 @@
 	site_code = 'ffpb',
 
 	-- v4 and v6 prefixes in which nodes+clients might get an IP
-	prefix4 = '10.132.0.0/16',
+	prefix4 = '10.132.0.0/18',
 	prefix6 = 'fdca:ffee:ff12:132::/64',
 
+	-- extra ipv6 prefixes used in this mesh area
+	additional_prefix6 = { '2001:470:6d:860::/64', },
+
 	-- timezone
 	timezone = 'CET-1CEST,M3.5.0,M10.5.0/3', -- Europe/Berlin