From 45fdb3334025721ada6071722991ecf00938c4a7 Mon Sep 17 00:00:00 2001
From: cuongdt1994 <63875204+cuongdt1994@users.noreply.github.com>
Date: Sun, 25 Jun 2023 13:15:38 +0700
Subject: [PATCH] broadcast T5313: UDP Broadcast Broken

When set more 2 interface, service udp broadcast not running and have error.
---
 src/conf_mode/bcast_relay.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/conf_mode/bcast_relay.py b/src/conf_mode/bcast_relay.py
index 39a2971ceb..14f4853eb2 100755
--- a/src/conf_mode/bcast_relay.py
+++ b/src/conf_mode/bcast_relay.py
@@ -56,8 +56,8 @@ def verify(relay):
         if isinstance(config.get('interface', []), str):
             config['interface'] = [ config['interface'] ]
         # Relaying data without two interface is kinda senseless ...
-        if len(config.get('interface', [])) < 2:
-            raise ConfigError('At least two interfaces are required for udp broadcast relay "{instance}"')
+        if len(config.get('interface', [])) < 2 or len(config.get('interface', [])) > 2:
+            raise ConfigError('Only two interfaces are required for udp broadcast relay "{instance}"')
 
         for interface in config.get('interface', []):
             if interface not in interfaces():