diff --git a/src/udppm.c b/src/udppm.c
index cbf7e56..270c24f 100644
--- a/src/udppm.c
+++ b/src/udppm.c
@@ -35,6 +35,9 @@ void * udppmchild(struct clientparam* param) {
 	int authres;
 	int i;
 	int len = 0;
+#if defined(_WIN32) && !defined(SHARE_UDP_SOCKET)
+	SOCKET copy = INVALID_SOCKET;
+#endif
 
 	if(parsehostname((char *)param->srv->target, param, ntohs(param->srv->targetport))) { RETURN(100) }
 
@@ -49,6 +52,23 @@ void * udppmchild(struct clientparam* param) {
 	authres = (*param->srv->authfunc)(param);
 	if(authres) { RETURN(authres); }
 	if((authres = udpbind(param))) { RETURN(authres); }
+#if defined(_WIN32) && !defined(SHARE_UDP_SOCKET)
+	/* A build which does not share the UDP listening socket (see proxy.h)
+	   answers the client through a socket of the session's own, bound to
+	   the service's address, as dnspr does; the listening socket has
+	   SO_REUSEADDR set for it in such a build. It is only written to. */
+	{
+		PROXYSOCKADDRTYPE local;
+		SASIZETYPE size = sizeof(local);
+		unsigned long ul = 1;
+
+		if(param->srv->so._getsockname(param->sostate, param->srv->srvsock, (struct sockaddr *)&local, &size)) { RETURN(21); }
+		if((copy = nssocket(param->srv, &param->srv->so, param->sostate, NS_IN, SASOCK(&local), SOCK_DGRAM, IPPROTO_UDP)) == INVALID_SOCKET) { RETURN(818); }
+		ioctlsocket(copy, FIONBIO, &ul);
+		if(param->srv->so._setsockopt(param->sostate, copy, SOL_SOCKET, SO_REUSEADDR, (char *)&ul, sizeof(int))) { RETURN(820); }
+		if(param->srv->so._bind(param->sostate, copy, (struct sockaddr *)&local, SASIZE(&local))) { RETURN(822); }
+	}
+#endif
 	if(!param->srv->s_option)hashadd(&udp_table, param, &param, MAX_COUNTER_TIME);
 	if(!param->bandlimfunc || !(*param->bandlimfunc)(param, 0, param->srv->udplen)){
 	    if(param->udp_nhops){
@@ -65,7 +85,11 @@ void * udppmchild(struct clientparam* param) {
 	}
 	_3proxy_sem_unlock(udpinit);
 	param->srvinbuf = 0;
+#if defined(_WIN32) && !defined(SHARE_UDP_SOCKET)
+	param->clisock = copy;
+#else
 	param->clisock = param->srv->srvsock;
+#endif
 	param->waitserver64 = 0x7fffffffffffffff;
 	param->res = udpsockmap(param, param->srv->timeouts[STRING_L]);
 	_3proxy_sem_lock(udpinit);
@@ -75,6 +99,9 @@ CLEANRET:
 
  _3proxy_sem_unlock(udpinit);
  dolog(param, NULL);
+#if defined(_WIN32) && !defined(SHARE_UDP_SOCKET)
+ if(copy != INVALID_SOCKET) param->srv->so._closesocket(param->sostate, copy);
+#endif
  param->clisock = INVALID_SOCKET;
  return (NULL);
 }