From 78156484bf138283484ddf49ad1cd8e2d630fa64 Mon Sep 17 00:00:00 2001
From: Megan Howell <62813469+cyberqueen-meg@users.noreply.github.com>
Date: Sat, 16 Jul 2022 16:07:39 -0700
Subject: [PATCH] Update to not freak out over vlans

https://www.reddit.com/r/RaspAP/comments/w0mm0v/how_to_configure_dhcp_on_vlan_interfaces/
---
 includes/dhcp.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/includes/dhcp.php b/includes/dhcp.php
index 850d5847..62371722 100755
--- a/includes/dhcp.php
+++ b/includes/dhcp.php
@@ -120,7 +120,7 @@ function validateDHCPInput()
 {
     define('IFNAMSIZ', 16);
     $iface = $_POST['interface'];
-    if (!preg_match('/^[a-zA-Z0-9]+$/', $iface)
+    if (!preg_match('/^[^\s\/\\0]+$/', $iface)
         || strlen($iface) >= IFNAMSIZ
     ) {
         $errors .= _('Invalid interface name.').'<br />'.PHP_EOL;