From f16ea39889c0fd65f3e533cf40cc3a0a33ac1c33 Mon Sep 17 00:00:00 2001
From: Dirk Engling <erdgeist@erdgeist.org>
Date: Tue, 3 Nov 2026 06:02:47 +0100
Subject: Let a user pick their cluster's own multicast group

---
 src/ot_config.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/ot_config.c')

diff --git a/src/ot_config.c b/src/ot_config.c
index 95136b5..4064d1b 100644
--- a/src/ot_config.c
+++ b/src/ot_config.c
@@ -208,6 +208,7 @@ typedef enum {
     CONFIG_TRACKER_REDIRECT_URL,
     CONFIG_LIVESYNC_CLUSTER_NODE_IP,
     CONFIG_LIVESYNC_CLUSTER_LISTEN,
+    CONFIG_LIVESYNC_CLUSTER_GROUP,
 } config_kind;
 
 typedef struct {
@@ -247,6 +248,7 @@ static const config_key config_keys[] = {
 #ifdef WANT_SYNC_LIVE
     CONFIG_KEY("livesync.cluster.node_ip", CONFIG_LIVESYNC_CLUSTER_NODE_IP),
     CONFIG_KEY("livesync.cluster.listen",  CONFIG_LIVESYNC_CLUSTER_LISTEN),
+    CONFIG_KEY("livesync.cluster.group",   CONFIG_LIVESYNC_CLUSTER_GROUP),
 #endif
 };
 static const size_t config_entry_count = sizeof(config_keys) / sizeof(config_keys[0]);
@@ -378,6 +380,10 @@ static int parse_configfile(char *config_filename) {
         set_config_option(&g_redirecturl, p);
         break;
 #ifdef WANT_SYNC_LIVE
+      case CONFIG_LIVESYNC_CLUSTER_GROUP:
+        if (!ip_parse(p, tmpip) || livesync_set_group(tmpip) == -1)
+          goto parse_error;
+        break;
       case CONFIG_LIVESYNC_CLUSTER_NODE_IP:
         if (!scan_ip6_net(p, &tmpnet))
           goto parse_error;
-- 
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