diff --git a/LICENSE.txt b/LICENSE.txt
index 78daf4c2a..fac95b787 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -10,7 +10,7 @@ License text copyright (c) 2017 MariaDB Corporation Ab, All Rights Reserved.
 Parameters
 
 Licensor:             ZeroTier, Inc.
-Licensed Work:        ZeroTier Network Virtualization Engine 1.4.4
+Licensed Work:        ZeroTier Network Virtualization Engine
                       The Licensed Work is (c)2019 ZeroTier, Inc.
 Additional Use Grant: You may make use of the Licensed Work, provided you
                       do not use it in any of the following ways:
@@ -26,7 +26,7 @@ Additional Use Grant: You may make use of the Licensed Work, provided you
                       ZeroTier behind the scenes to operate a service not
                       related to ZeroTier network administration.
 
-                      * Create Non-Open-Source Commercial Derviative Works
+                      * Create Non-Open-Source Commercial Derivative Works
 
                       (2) Link or directly include the Licensed Work in a
                       commercial or for-profit application or other product
diff --git a/node/Locator.hpp b/node/Locator.hpp
index 81e57676a..06c278bfa 100644
--- a/node/Locator.hpp
+++ b/node/Locator.hpp
@@ -22,6 +22,7 @@
 #include "SHA512.hpp"
 #include "Str.hpp"
 #include "ScopedPtr.hpp"
+#include "SharedPtr.hpp"
 
 #include <algorithm>
 #include <vector>
@@ -43,6 +44,8 @@ namespace ZeroTier {
  */
 class Locator
 {
+	friend class SharedPtr<Locator>;
+
 public:
 	ZT_ALWAYS_INLINE Locator() : _ts(0),_signatureLength(0) {}
 
@@ -371,6 +374,7 @@ private:
 	std::vector<Identity> _virtual;
 	unsigned int _signatureLength;
 	uint8_t _signature[ZT_SIGNATURE_BUFFER_SIZE];
+	AtomicCounter __refCount;
 };
 
 } // namespace ZeroTier
diff --git a/node/Node.cpp b/node/Node.cpp
index 9aeccf8aa..ddd888d21 100644
--- a/node/Node.cpp
+++ b/node/Node.cpp
@@ -639,6 +639,33 @@ void Node::setController(void *networkControllerInstance)
 /* Node methods used only within node/                                      */
 /****************************************************************************/
 
+SharedPtr< const Locator > Node::locator()
+{
+	Mutex::Lock lck(_locator_m);
+	if (!_locator) {
+		Locator *l = new Locator();
+		try {
+			RR->topology->eachRoot([l](const SharedPtr<Peer> &p,const std::vector<InetAddress> &phyAddr) -> bool {
+				l->add(p->identity());
+				return true;
+			});
+			{
+				Mutex::Lock lck2(_localInterfaceAddresses_m);
+				for(std::vector< ZT_InterfaceAddress >::const_iterator a(_localInterfaceAddresses.begin());a!=_localInterfaceAddresses.end();++a) {
+					if (a->permanent != 0) {
+						l->add(*reinterpret_cast<const InetAddress *>(&(a->address)));
+					}
+				}
+			}
+		} catch ( ... ) {
+			delete l;
+			throw;
+		}
+		_locator.set(l);
+	}
+	return _locator;
+}
+
 bool Node::shouldUsePathForZeroTierTraffic(void *tPtr,const Address &ztaddr,const int64_t localSocket,const InetAddress &remoteAddress)
 {
 	if (!Path::isAddressValidForPath(remoteAddress))
diff --git a/node/Node.hpp b/node/Node.hpp
index 6136c2d8e..16e6824fc 100644
--- a/node/Node.hpp
+++ b/node/Node.hpp
@@ -41,6 +41,8 @@
 
 namespace ZeroTier {
 
+class Locator;
+
 /**
  * Implementation of Node object as defined in CAPI
  *
@@ -175,6 +177,7 @@ public:
 
 	void setInterfaceAddresses(const ZT_InterfaceAddress *addrs,unsigned int addrCount);
 
+	SharedPtr< const Locator > locator();
 	ZT_ALWAYS_INLINE void postEvent(void *tPtr,ZT_Event ev,const void *md = (const void *)0) { _cb.eventCallback(reinterpret_cast<ZT_Node *>(this),_uPtr,tPtr,ev,md); }
 	ZT_ALWAYS_INLINE void configureVirtualNetworkPort(void *tPtr,uint64_t nwid,void **nuptr,ZT_VirtualNetworkConfigOperation op,const ZT_VirtualNetworkConfig *nc) { _cb.virtualNetworkConfigFunction(reinterpret_cast<ZT_Node *>(this),_uPtr,tPtr,nwid,nuptr,op,nc); }
 	ZT_ALWAYS_INLINE bool online() const { return _online; }
@@ -284,14 +287,14 @@ private:
 		ZT_ALWAYS_INLINE bool operator!=(const _LocalControllerAuth &a) const { return ((a.nwid != nwid)||(a.address != address)); }
 	};
 	Hashtable< _LocalControllerAuth,int64_t > _localControllerAuthorizations;
-	Mutex _localControllerAuthorizations_m;
-
 	Hashtable< uint64_t,SharedPtr<Network> > _networks;
+	SharedPtr< const Locator > _locator;
+	std::vector< ZT_InterfaceAddress > _localInterfaceAddresses;
+
+	Mutex _localControllerAuthorizations_m;
 	Mutex _networks_m;
-
-	std::vector<ZT_InterfaceAddress> _localInterfaceAddresses;
+	Mutex _locator_m;
 	Mutex _localInterfaceAddresses_m;
-
 	Mutex _backgroundTasksLock;
 
 	uint8_t _multipathMode;
diff --git a/node/Peer.hpp b/node/Peer.hpp
index 0ac413f1b..3f658b555 100644
--- a/node/Peer.hpp
+++ b/node/Peer.hpp
@@ -525,8 +525,6 @@ private:
 	unsigned int _QoSCutoffCount;
 	unsigned int _ACKCutoffCount;
 
-	AtomicCounter __refCount;
-
 	RingBuffer<int,ZT_MULTIPATH_PROPORTION_WIN_SZ> _pathChoiceHist;
 
 	bool _linkIsBalanced;
@@ -537,6 +535,8 @@ private:
 	int64_t _lastAggregateAllocation;
 
 	char _interfaceListStr[256]; // 16 characters * 16 paths in a link
+
+	AtomicCounter __refCount;
 };
 
 } // namespace ZeroTier
diff --git a/node/Topology.hpp b/node/Topology.hpp
index 2cdd0e6a7..fc66b665a 100644
--- a/node/Topology.hpp
+++ b/node/Topology.hpp
@@ -70,7 +70,7 @@ private:
 		_rootIdentities.clear();
 		Hashtable< Str,Locator >::Iterator i(_roots);
 		Str *k = (Str *)0;
-		Locator *v = (Locator *)0;
+		SharedPtr< const Locator > *v = (SharedPtr< const Locator > *)0;
 		while (i.next(k,v)) {
 			if (*v)
 				_rootIdentities.set(v->id(),true);
@@ -534,7 +534,7 @@ private:
 	Hashtable< Address,SharedPtr<Peer> > _peers;
 	Hashtable< Path::HashKey,SharedPtr<Path> > _paths;
 
-	Hashtable< Str,Locator > _roots;
+	Hashtable< Str,SharedPtr<const Locator> > _roots;
 	Hashtable< Identity,bool > _rootIdentities;
 	bool _rootsModified;