From 65e350153eeba16ab47386963a8e705a22dd2cc8 Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Sat, 22 Oct 2022 18:05:14 +0100
Subject: [PATCH] Don't start multicast module if all `Beacon` and `Listen` are
 disabled

---
 src/multicast/multicast.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/multicast/multicast.go b/src/multicast/multicast.go
index d40bcfc0..84d5933a 100644
--- a/src/multicast/multicast.go
+++ b/src/multicast/multicast.go
@@ -77,7 +77,11 @@ func (m *Multicast) _start() error {
 	if m._isOpen {
 		return fmt.Errorf("multicast module is already started")
 	}
-	if len(m.config._interfaces) == 0 {
+	var anyEnabled bool
+	for intf := range m.config._interfaces {
+		anyEnabled = anyEnabled || intf.Beacon || intf.Listen
+	}
+	if !anyEnabled {
 		return nil
 	}
 	m.log.Debugln("Starting multicast module")