From 7c8d80e76f93029437f9a52f04c9d02b0d55dd78 Mon Sep 17 00:00:00 2001
From: zhengjiebing <zhengjiebing_yewu@cmss.chinamobile.com>
Date: Tue, 16 Jan 2024 23:52:23 +0800
Subject: [PATCH] fix host_addr6 can be assigned a multicast address

---
 src/lstack/core/lstack_cfg.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/lstack/core/lstack_cfg.c b/src/lstack/core/lstack_cfg.c
index 87df790..5e30e89 100644
--- a/src/lstack/core/lstack_cfg.c
+++ b/src/lstack/core/lstack_cfg.c
@@ -250,6 +250,12 @@ static int32_t parse_host_addr6(void)
     if (ip6addr_aton(value, &g_config_params.host_addr6) == 0) {
         return -EINVAL;
     }
+
+    if (ip6_addr_ismulticast(&g_config_params.host_addr6)) {
+        LSTACK_PRE_LOG(LSTACK_ERR, "cfg: host_addr6 cannot be a multicast address.");
+        return -EINVAL;
+    }
+
     return 0;
 }
 
-- 
2.33.0

