diff --git a/node/RingBuffer.hpp b/node/RingBuffer.hpp
index dab81b9e..0d90152b 100644
--- a/node/RingBuffer.hpp
+++ b/node/RingBuffer.hpp
@@ -72,6 +72,11 @@ public:
 		memset(buf, 0, sizeof(T) * size);
 	}
 
+	~RingBuffer()
+	{
+		delete [] buf;
+	}
+
 	/**
 	 * @return A pointer to the underlying buffer
 	 */
diff --git a/node/Switch.cpp b/node/Switch.cpp
index 74c22d33..58979e26 100644
--- a/node/Switch.cpp
+++ b/node/Switch.cpp
@@ -532,7 +532,7 @@ void Switch::aqm_enqueue(void *tPtr, const SharedPtr<Network> &network, Packet &
 	TXQueueEntry *txEntry = new TXQueueEntry(dest,RR->node->now(),packet,encrypt);
 	
 	ManagedQueue *selectedQueue = nullptr;
-	for (int i=0; i<ZT_QOS_NUM_BUCKETS; i++) {
+	for (size_t i=0; i<ZT_QOS_NUM_BUCKETS; i++) {
 		if (i < nqcb->oldQueues.size()) { // search old queues first (I think this is best since old would imply most recent usage of the queue)
 			if (nqcb->oldQueues[i]->id == qosBucket) {
 				selectedQueue = nqcb->oldQueues[i];
@@ -568,7 +568,7 @@ void Switch::aqm_enqueue(void *tPtr, const SharedPtr<Network> &network, Packet &
 	{
 		// DEBUG_INFO("too many enqueued packets (%d), finding packet to drop", nqcb->_currEnqueuedPackets);
 		int maxQueueLength = 0;
-		for (int i=0; i<ZT_QOS_NUM_BUCKETS; i++) {
+		for (size_t i=0; i<ZT_QOS_NUM_BUCKETS; i++) {
 			if (i < nqcb->oldQueues.size()) {
 				if (nqcb->oldQueues[i]->byteLength > maxQueueLength) {
 					maxQueueLength = nqcb->oldQueues[i]->byteLength;
diff --git a/service/OneService.cpp b/service/OneService.cpp
index a1c53764..e3034059 100644
--- a/service/OneService.cpp
+++ b/service/OneService.cpp
@@ -625,6 +625,8 @@ public:
 						break;
 					if (!pkt)
 						break;
+					if (!_run)
+						break;
 
 					const ZT_ResultCode rc = _node->processWirePacket(nullptr,pkt->now,pkt->sock,&(pkt->from),pkt->data,pkt->size,&_nextBackgroundTaskDeadline);
 					{
@@ -2244,6 +2246,12 @@ public:
 #endif
 					syncManagedStuff(n,true,true);
 					n.tap->setMtu(nwc->mtu);
+#if defined(ZT_SDK)
+					// Inform the virtual tap of the update
+					if (op == ZT_VIRTUAL_NETWORK_CONFIG_OPERATION_CONFIG_UPDATE) {
+						n.tap->lastConfigUpdate(OSUtils::now());
+					}
+#endif
 				} else {
 					_nets.erase(nwid);
 					return -999; // tap init failed