diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 980fe92604..54f06a6875 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -152,7 +152,6 @@ jobs:
 
       - name: Run testsuite
         run: make -C testing/external/zeek-testing-cluster
-        continue-on-error: true
 
       # upload-artifact balks at certain characters in artifact
       # filenames, so substitute them for dots.
diff --git a/CHANGES b/CHANGES
index da03e99271..456c924b56 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,14 @@
+5.1.0-dev.261 | 2022-07-14 15:46:29 -0700
+
+  * Management framework: fix an agent boot-time race condition plus minor tweaks (Christian Kreibich, Corelight)
+
+      - bump cluster testsuite
+      - undo the testsuite result mask
+      - additional logging tweaks
+      - additional context in a few log messages
+      - await Supervisor peering before sending agent's hello
+      - remove outdated comment
+
 5.1.0-dev.254 | 2022-07-14 09:48:20 -0700
 
   * Add pow function (AmazingPP)
diff --git a/VERSION b/VERSION
index 767fe61ad5..86f87a61bf 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-5.1.0-dev.254
+5.1.0-dev.261
diff --git a/scripts/policy/frameworks/management/agent/main.zeek b/scripts/policy/frameworks/management/agent/main.zeek
index 4111828770..54b9b28362 100644
--- a/scripts/policy/frameworks/management/agent/main.zeek
+++ b/scripts/policy/frameworks/management/agent/main.zeek
@@ -128,6 +128,11 @@ global restart_request_finish: function(req: Management::Request::Request);
 # a status response.
 global get_nodes_request_finish: function(req: Management::Request::Request);
 
+# Whether we have peered with the Supervisor. We need to make sure we've peered
+# prior to controller interactions, since we might otherwise send requests to
+# the Supervisor that it never received.
+global g_supervisor_peered = F;
+
 # The global configuration, as deployed by the controller.
 global g_config: Management::Configuration;
 
@@ -354,7 +359,8 @@ function supervisor_status(node: string): Management::Request::Request
 	local req = Management::Request::create();
 	req$supervisor_state_agent = SupervisorState($node = node);
 
-	Management::Log::info(fmt("tx SupervisorControl::status_request %s %s", req$id, node));
+	Management::Log::info(fmt("tx SupervisorControl::status_request %s %s",
+	    req$id, node == "" ? "<all>" : node));
 	Broker::publish(SupervisorControl::topic_prefix,
 	    SupervisorControl::status_request, req$id, node);
 
@@ -366,7 +372,8 @@ function supervisor_create(nc: Supervisor::NodeConfig): Management::Request::Req
 	local req = Management::Request::create();
 	req$supervisor_state_agent = SupervisorState($node = nc$name);
 
-	Management::Log::info(fmt("tx SupervisorControl::create_request %s %s", req$id, nc$name));
+	Management::Log::info(fmt("tx SupervisorControl::create_request %s %s",
+	    req$id, nc$name));
 	Broker::publish(SupervisorControl::topic_prefix,
 	    SupervisorControl::create_request, req$id, nc);
 
@@ -378,7 +385,8 @@ function supervisor_destroy(node: string): Management::Request::Request
 	local req = Management::Request::create();
 	req$supervisor_state_agent = SupervisorState($node = node);
 
-	Management::Log::info(fmt("tx SupervisorControl::destroy_request %s %s", req$id, node));
+	Management::Log::info(fmt("tx SupervisorControl::destroy_request %s %s",
+	    req$id, node == "" ? "<all>" : node));
 	Broker::publish(SupervisorControl::topic_prefix,
 	    SupervisorControl::destroy_request, req$id, node);
 
@@ -390,7 +398,8 @@ function supervisor_restart(node: string): Management::Request::Request
 	local req = Management::Request::create();
 	req$supervisor_state_agent = SupervisorState($node = node);
 
-	Management::Log::info(fmt("tx SupervisorControl::restart_request %s %s", req$id, node));
+	Management::Log::info(fmt("tx SupervisorControl::restart_request %s %s",
+	    req$id, node == "" ? "<all>" : node));
 	Broker::publish(SupervisorControl::topic_prefix,
 	    SupervisorControl::restart_request, req$id, node);
 
@@ -1049,6 +1058,14 @@ event Broker::peer_added(peer: Broker::EndpointInfo, msg: string)
 	local sni = supervisor_network_info();
 
 	if ( peer$network$address == sni$address && peer$network$bound_port == sni$bound_port )
+		g_supervisor_peered = T;
+
+	# If the Supervisor hasn't yet peered with us, don't broadcast
+	# notify_agent_hello. Doing so would exposes a race: we might receive
+	# commands from the controller that lead to requests to the Supervisor
+	# that it won't yet receive. It's easier to handle this here than to
+	# push the wait into all types of received commands.
+	if ( g_supervisor_peered == F )
 		return;
 
 	# Supervisor aside, this does not (cannot?) immediately verify that the
@@ -1063,10 +1080,6 @@ event Broker::peer_added(peer: Broker::EndpointInfo, msg: string)
 	    Management::Agent::API::version);
 	}
 
-# XXX We may want a request timeout event handler here. It's arguably cleaner to
-# send supervisor failure events back to the controller than to rely on its
-# controller-agent request timeout to kick in.
-
 event zeek_init()
 	{
 	local epi = Management::Agent::endpoint_info();
diff --git a/scripts/policy/frameworks/management/controller/main.zeek b/scripts/policy/frameworks/management/controller/main.zeek
index c88e3127d0..be3052af19 100644
--- a/scripts/policy/frameworks/management/controller/main.zeek
+++ b/scripts/policy/frameworks/management/controller/main.zeek
@@ -236,7 +236,7 @@ function add_instance(inst: Management::Instance)
 
 		local req = Management::Request::create();
 
-		Management::Log::info(fmt("tx Management::Agent::API::agent_welcome_request to %s", inst$name));
+		Management::Log::info(fmt("tx Management::Agent::API::agent_welcome_request %s to %s", req$id, inst$name));
 		Broker::publish(Management::Agent::topic_prefix + "/" + inst$name,
 		    Management::Agent::API::agent_welcome_request, req$id);
 		}
@@ -767,7 +767,7 @@ event Management::Agent::API::notify_agent_hello(instance: string, id: string, c
 		# context for it from the configuration. Tell agent.
 		local req = Management::Request::create();
 
-		Management::Log::info(fmt("tx Management::Agent::API::agent_welcome_request to %s", instance));
+		Management::Log::info(fmt("tx Management::Agent::API::agent_welcome_request %s to %s", req$id, instance));
 		Broker::publish(Management::Agent::topic_prefix + "/" + instance,
 		    Management::Agent::API::agent_welcome_request, req$id);
 		}
diff --git a/scripts/policy/frameworks/management/log.zeek b/scripts/policy/frameworks/management/log.zeek
index 95798421a7..bc952f0971 100644
--- a/scripts/policy/frameworks/management/log.zeek
+++ b/scripts/policy/frameworks/management/log.zeek
@@ -122,7 +122,8 @@ function error(message: string)
 			 $role=r2s[Management::role], $message=message]);
 	}
 
-event zeek_init()
+# Bump priority to ensure the log stream exists when other zeek_init handlers use it.
+event zeek_init() &priority=5
 	{
 	if ( ! Supervisor::is_supervised() )
 		return;
diff --git a/scripts/policy/frameworks/management/node/main.zeek b/scripts/policy/frameworks/management/node/main.zeek
index df65d754b9..7c3709cc0d 100644
--- a/scripts/policy/frameworks/management/node/main.zeek
+++ b/scripts/policy/frameworks/management/node/main.zeek
@@ -118,4 +118,6 @@ event zeek_init()
 
 	Broker::peer(epi$network$address, epi$network$bound_port, Management::connect_retry);
 	Broker::subscribe(node_topic);
+
+	Management::Log::info(fmt("node %s is live, Broker ID %s", Cluster::node, Broker::node_id()));
 	}
diff --git a/testing/external/commit-hash.zeek-testing-cluster b/testing/external/commit-hash.zeek-testing-cluster
index f63236b796..06da73542e 100644
--- a/testing/external/commit-hash.zeek-testing-cluster
+++ b/testing/external/commit-hash.zeek-testing-cluster
@@ -1 +1 @@
-e25a763d4545f35e8442c9d3145ede483d629a1a
+6e95008a28f5fe5d26d8a77384eb8355536df25e