diff --git a/testing/btest/Baseline/cluster.broker.cluster-hello-zero-network-timestamp/..manager..stdout b/testing/btest/Baseline/cluster.broker.cluster-hello-zero-network-timestamp/..manager..stdout
new file mode 100644
index 0000000000..d07af135ca
--- /dev/null
+++ b/testing/btest/Baseline/cluster.broker.cluster-hello-zero-network-timestamp/..manager..stdout
@@ -0,0 +1,3 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+Cluster::hello name=worker-1 is_remote_event=T metadata=[[id=EventMetadata::NETWORK_TIMESTAMP, val=0.0]]
+Cluster::node_up name=worker-1 is_remote_event=F metadata=[[id=EventMetadata::NETWORK_TIMESTAMP, val=XXXXXXXXXX.XXXXXX]]
diff --git a/testing/btest/Baseline/cluster.broker.cluster-hello-zero-network-timestamp/..worker-1..stdout b/testing/btest/Baseline/cluster.broker.cluster-hello-zero-network-timestamp/..worker-1..stdout
new file mode 100644
index 0000000000..09db3fb744
--- /dev/null
+++ b/testing/btest/Baseline/cluster.broker.cluster-hello-zero-network-timestamp/..worker-1..stdout
@@ -0,0 +1,3 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+Cluster::hello name=manager is_remote_event=T metadata=[[id=EventMetadata::NETWORK_TIMESTAMP, val=XXXXXXXXXX.XXXXXX]]
+Cluster::node_up name=manager is_remote_event=F metadata=[[id=EventMetadata::NETWORK_TIMESTAMP, val=0.0]]
diff --git a/testing/btest/cluster/broker/cluster-hello-zero-network-timestamp.zeek b/testing/btest/cluster/broker/cluster-hello-zero-network-timestamp.zeek
new file mode 100644
index 0000000000..49541794ae
--- /dev/null
+++ b/testing/btest/cluster/broker/cluster-hello-zero-network-timestamp.zeek
@@ -0,0 +1,48 @@
+# @TEST-DOC: Ensure Cluster::hello sent by a worker with a zero network time is observed with a zero network timestamp by the manager.
+#
+# @TEST-PORT: BROKER_MANAGER_PORT
+# @TEST-PORT: BROKER_WORKER1_PORT
+#
+# @TEST-EXEC: cp $FILES/broker/cluster-layout.zeek .
+#
+# @TEST-EXEC: zeek -b --parse-only %INPUT
+#
+# @TEST-EXEC: btest-bg-run manager "ZEEKPATH=$ZEEKPATH:.. && CLUSTER_NODE=manager zeek -b %INPUT"
+# @TEST-EXEC: btest-bg-run worker-1 "ZEEKPATH=$ZEEKPATH:.. && CLUSTER_NODE=worker-1 zeek -b %INPUT"
+#
+# @TEST-EXEC: btest-bg-wait 30
+# @TEST-EXEC: btest-diff ./manager/.stdout
+# @TEST-EXEC: btest-diff ./worker-1/.stdout
+
+redef allow_network_time_forward = F;
+redef EventMetadata::add_network_timestamp = T;
+
+event do_terminate()
+	{
+	terminate();
+	}
+
+event zeek_init()
+	{
+	# Set the manager's time to non-zero, the worker continues to be at 0.0.
+	if ( Cluster::local_node_type() == Cluster::MANAGER )
+		set_network_time(double_to_time(1748256346));
+	}
+
+event Cluster::hello(name: string, id: string)
+	{
+	print fmt("Cluster::hello name=%s is_remote_event=%s metadata=%s", name, is_remote_event(), EventMetadata::current_all());
+	}
+
+event Cluster::node_up(name: string, id: string)
+	{
+	print fmt("Cluster::node_up name=%s is_remote_event=%s metadata=%s", name, is_remote_event(), EventMetadata::current_all());
+
+	if ( Cluster::local_node_type() == Cluster::MANAGER )
+		Cluster::publish(Cluster::worker_topic, do_terminate);
+	}
+
+event Cluster::node_down(name: string, id: string)
+	{
+	terminate();
+	}