(legacy) remove cache stuff from find_interface_ipv6_ll

src/etc/inc/gwlb.inc

@@ -188,7 +188,7 @@ EOD;
 			if ($gateway['monitor'] == $gateway['gateway']) {
 				/* link locals really need a different src ip */
 				if (is_linklocal($gateway['gateway'])) {
-					$gwifip = find_interface_ipv6_ll($gateway['interface'], true);
+					$gwifip = find_interface_ipv6_ll($gateway['interface']);
 				} else {
 					$gwifip = find_interface_ipv6($gateway['interface']);
 				}

src/etc/inc/interfaces.inc

@@ -4524,29 +4524,20 @@ function find_interface_ipv6($interface) {
 /*
  * find_interface_ipv6_ll($interface): return the interface ipv6 link local (first found)
  */
-function find_interface_ipv6_ll($interface, $flush = false) {
-	global $interface_llv6_arr_cache;
-	global $config;
-
-	$interface = str_replace("\n", "", $interface);
-
-	if (!does_interface_exist($interface))
-		return;
-
-	/* Setup IP cache */
-	if (!isset($interface_llv6_arr_cache[$interface]) or $flush) {
+function find_interface_ipv6_ll($interface) {
+		$interface = trim($interface);
+		if (does_interface_exist($interface)) {
 				$ifinfo = pfSense_getall_interface_addresses($interface);
 				foreach($ifinfo as $line) {
 						if (strstr($line, ":")) {
 								$parts = explode("/", $line);
 								if(is_linklocal($parts[0])) {
-					$ifinfo['linklocal'] = $parts[0];
+										return $parts[0];
 								}
 						}
 				}
-		$interface_llv6_arr_cache[$interface] = $ifinfo['linklocal'];
 		}
-	return $interface_llv6_arr_cache[$interface];
+		return null;
 }
 
 function find_interface_subnet($interface, $flush = false) {