From d74e5030e2cdfdeae2b4063adbdb5d5364dd08cf Mon Sep 17 00:00:00 2001
From: MrSmoke <709976+MrSmoke@users.noreply.github.com>
Date: Mon, 22 Jan 2024 17:24:51 +1100
Subject: [PATCH] add null check

---
 .../Primitives/src/Extensions/IpAddressExtensions.cs           | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Primitives/Primitives/src/Extensions/IpAddressExtensions.cs b/src/Primitives/Primitives/src/Extensions/IpAddressExtensions.cs
index 0b208ad..e7e7581 100644
--- a/src/Primitives/Primitives/src/Extensions/IpAddressExtensions.cs
+++ b/src/Primitives/Primitives/src/Extensions/IpAddressExtensions.cs
@@ -19,6 +19,9 @@ public static class IpAddressExtensions
     /// <example><code>bool isPrivate = IPAddress.Parse("127.0.0.1").IsPrivate();</code></example>
     public static bool IsPrivate(this IPAddress ip)
     {
+        if (ip is null)
+            throw new ArgumentNullException(nameof(ip));
+
         // Map back to IPv4 if mapped to IPv6, for example "::ffff:1.2.3.4" to "1.2.3.4".
         if (ip.IsIPv4MappedToIPv6)
             ip = ip.MapToIPv4();