From 137d5dfe90fcf25ca7030430d074f8dcd31cd0c6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=8E=E9=80=9A=E6=B4=B2?= <zhangsongcui3371@sina.com>
Date: Tue, 5 Aug 2025 19:35:43 +0800
Subject: [PATCH] LocalIP (Windows): show only preferred IP when `showAllIPs`
 is not set

Ref: #1883
---
 src/detection/localip/localip_windows.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/detection/localip/localip_windows.c b/src/detection/localip/localip_windows.c
index 1b067885d..45b1445b5 100644
--- a/src/detection/localip/localip_windows.c
+++ b/src/detection/localip/localip_windows.c
@@ -127,6 +127,9 @@ const char* ffDetectLocalIps(const FFLocalIpOptions* options, FFlist* results)
 
         for (IP_ADAPTER_UNICAST_ADDRESS* ifa = adapter->FirstUnicastAddress; ifa; ifa = ifa->Next)
         {
+            if (!(options->showType & FF_LOCALIP_TYPE_ALL_IPS_BIT) && ifa->DadState != IpDadStatePreferred)
+                continue;
+
             if (ifa->Address.lpSockaddr->sa_family == AF_INET)
             {
                 if (!(typesToAdd & (FF_LOCALIP_TYPE_IPV4_BIT | FF_LOCALIP_TYPE_ALL_IPS_BIT))) continue;