From 450e82278061d5217eb0f1bac92c7ae1d1a53f9d Mon Sep 17 00:00:00 2001
From: nikthechampiongr <32041239+nikthechampiongr@users.noreply.github.com>
Date: Thu, 21 Nov 2024 00:20:28 +0200
Subject: [PATCH] Fix ReservedAddress checking (#14)

Mask was incorrectly calculated.
---
 Lidgren.Network/NetReservedAddress.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lidgren.Network/NetReservedAddress.cs b/Lidgren.Network/NetReservedAddress.cs
index ea693156..fba91c5a 100644
--- a/Lidgren.Network/NetReservedAddress.cs
+++ b/Lidgren.Network/NetReservedAddress.cs
@@ -45,7 +45,7 @@ public static bool IsAddressReserved(IPAddress address)
 
 			foreach (var (reservedIp, maskBits) in ReservedRanges)
 			{
-				var mask = uint.MaxValue << maskBits;
+				var mask = uint.MaxValue << (32 - maskBits);
 				if ((ipBits & mask) == (reservedIp & mask))
 					return true;
 			}