remove_filter( 'option_home', '_config_wp_home' );
// If the network upgrade hasn't run yet, assume ms-files.php rewriting is used.
-add_filter( 'default_site_option_ms_files_rewriting', '__return_true' );
\ No newline at end of file
+add_filter( 'default_site_option_ms_files_rewriting', '__return_true' );
+
+// Whitelist multisite domains for HTTP requests
+add_filter( 'http_request_host_is_external', 'ms_allowed_http_request_hosts', 20, 2 );