From d85fc71a3a12546564842280cf07ee4b02f39578 Mon Sep 17 00:00:00 2001
From: hiura2023 <hiura_mrmr@yahoo.co.jp>
Date: Mon, 5 Jan 2026 23:28:10 +0900
Subject: [PATCH] Fix: Kernel-mode NAT not available

---
 src/Cedar/Virtual.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Cedar/Virtual.c b/src/Cedar/Virtual.c
index f5d105cf..f82b717c 100644
--- a/src/Cedar/Virtual.c
+++ b/src/Cedar/Virtual.c
@@ -2699,6 +2699,9 @@ NATIVE_STACK *NnGetNextInterface(NATIVE_NAT *t)
 			Format(ret->Ipc->ClientHostname, sizeof(ret->Ipc->ClientHostname), NN_HOSTNAME_FORMAT, tmp);
 			StrLower(ret->Ipc->ClientHostname);
 
+			// To pass the validity check of the source IP address performed by IPCSendIPv4()
+			UINTToIP(&ret->Ipc->ClientIPAddress, 0);
+
 			Debug("IPCDhcpAllocateIP for %s\n", ret->DeviceName);
 			if (IPCDhcpAllocateIP(ret->Ipc, &opt, t->HaltTube2))
 			{