don't send local IP to BunkerNet on default server, fix certbot new when MULTISITE=no and fix unknown reason in get_reason

core/bunkernet/confs/default-server-http/bunkernet.conf

@@ -21,6 +21,14 @@ log_by_lua_block {
 		if ngx.status ~= ngx.HTTP_CLOSE then
 			return
 		end
+		-- Check if IP is global
+		local is_global, err = utils.ip_is_global(ngx.var.remote_addr)
+		if is_global == nil then
+			return
+		end
+		if not is_global then
+			return
+		end
 		-- Only report if it hasn't been reported for the same reason recently
 		local reported = datastore:get("plugin_bunkernet_cache_" .. ngx.var.remote_addr .. "default")
 		if reported then