From 0a33697a90ef898065be9a4fe99fbff10a84b166 Mon Sep 17 00:00:00 2001
From: Franco Fichtner <franco@opnsense.org>
Date: Mon, 31 Mar 2025 11:10:51 +0200
Subject: [PATCH] interfaces: allow literal comma by escape sequence '\,';
 closes #8503

---
 src/etc/inc/interfaces.inc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/etc/inc/interfaces.inc b/src/etc/inc/interfaces.inc
index 4671bdd5f..982b8cee0 100644
--- a/src/etc/inc/interfaces.inc
+++ b/src/etc/inc/interfaces.inc
@@ -3325,9 +3325,9 @@ function DHCP_Config_File_Advanced($interface, $wancfg, $wanif)
 
     $option_modifiers = "";
     if ($wancfg['adv_dhcp_option_modifiers'] != '') {
-        $modifiers = preg_split('/\s*,\s*(?=(?:[^"]*"[^"]*")*[^"]*$)/', $wancfg['adv_dhcp_option_modifiers']);
+        $modifiers = preg_split('/\s*(?<!\\\),\s*(?=(?:[^"]*"[^"]*")*[^"]*$)/', $wancfg['adv_dhcp_option_modifiers']);
         foreach ($modifiers as $modifier) {
-            $option_modifiers .= "\t" . $modifier . ";\n";
+            $option_modifiers .= "\t" . str_replace('\,', ',', $modifier) . ";\n";
         }
     }