From 81a0a9ffb7acc40a1e39e8253adaad3622010159 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Fabian=20Gr=C3=BCnbichler?= <f.gruenbichler@proxmox.com>
Date: Tue, 2 Jul 2019 10:24:45 +0200
Subject: [PATCH] corosync: fix multicast detection
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for Corosync 3.x, multicast is only needed if the transport is explicitly set to 'udp'

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
---
 src/PVE/Firewall.pm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/PVE/Firewall.pm b/src/PVE/Firewall.pm
index d300dc9..ef724a7 100644
--- a/src/PVE/Firewall.pm
+++ b/src/PVE/Firewall.pm
@@ -2418,7 +2418,8 @@ sub enable_host_firewall {
 	});
 
 	# allow multicast only if enabled in config
-	$multicast_enabled = $corosync_conf->{main}->{totem}->{transport} // 0;
+	my $corosync_transport = $corosync_conf->{main}->{totem}->{transport};
+	$multicast_enabled = defined($corosync_transport) && $corosync_transport eq 'udp';
     }
 
     # host inbound firewall
-- 
2.39.2