From 0f67d43858adb4cfb9b6c9dfd023e86260da3d9f Mon Sep 17 00:00:00 2001
From: Voltrex <mohammadkeyvanzade94@gmail.com>
Date: Wed, 22 Sep 2021 01:13:18 +0330
Subject: [PATCH] net: fix IPv4 validation regex

Fixed the IPv4's validation regex so it also matches IPv4 octets that
are prefixed by a `0` as they're also considered valid octets.

Fixes: https://github.com/nodejs/node/issues/40173
---
 lib/internal/net.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/internal/net.js b/lib/internal/net.js
index 8ae3170228dc..54194ce163fc 100644
--- a/lib/internal/net.js
+++ b/lib/internal/net.js
@@ -11,8 +11,8 @@ const { writeBuffer } = internalBinding('fs');
 const errors = require('internal/errors');
 
 // IPv4 Segment
-const v4Seg = '(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])';
-const v4Str = `(${v4Seg}[.]){3}${v4Seg}`;
+const v4Seg = '(?:[0-9]|[0-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])';
+const v4Str = `(?:${v4Seg}\\.){3}${v4Seg}`;
 const IPv4Reg = new RegExp(`^${v4Str}$`);
 
 // IPv6 Segment