From 9cf8d5699d88d75b4fd93fc7d85de3c3444b3db8 Mon Sep 17 00:00:00 2001
From: Alfredo Cardigliano <cardigliano@ntop.org>
Date: Fri, 25 Oct 2024 17:56:14 +0200
Subject: [PATCH] Add check for null mac

---
 src/Flow.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Flow.cpp b/src/Flow.cpp
index db54d3d327bd..c66e8da470b8 100644
--- a/src/Flow.cpp
+++ b/src/Flow.cpp
@@ -304,7 +304,7 @@ void Flow::deferredInitialization() {
 
       Mac *srv_mac = srv_host->getMac();
       /* Add client gateway */
-      if (srv_mac && (!srv_host->isLocalHost())) {
+      if (srv_mac && !srv_mac->isNull() && !srv_host->isLocalHost()) {
         LocalHost *lh = (LocalHost *)cli_host;
         lh->setRouterMac(srv_mac);
       }