--- a
+++ b/libupnpp/getsyshwaddr.c
@@ -0,0 +1,152 @@
+/* MiniUPnP project
+ * http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
+ *
+ * Copyright (c) 2006, Thomas Bernard
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * The name of the author may not be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <errno.h>
+#if defined(sun)
+#include <sys/sockio.h>
+#endif
+
+#include "config.h"
+#if HAVE_GETIFADDRS
+#include <ifaddrs.h>
+#ifdef __linux__
+#ifndef AF_LINK
+#define AF_LINK AF_INET
+#endif
+#else
+#include <net/if_dl.h>
+#endif
+#endif
+
+#include "getsyshwaddr.h"
+
+#define DPRINTF(A,B,C,D) 
+
+int
+getsyshwaddr(char *buf, int len)
+{
+	unsigned char mac[6];
+	int ret = -1;
+#if HAVE_GETIFADDRS
+	struct ifaddrs *ifap, *p;
+	struct sockaddr_in *addr_in;
+	uint8_t a;
+
+	if (getifaddrs(&ifap) != 0)
+	{
+		DPRINTF(E_ERROR, L_GENERAL, "getifaddrs(): %s\n", strerror(errno));
+		return -1;
+	}
+	for (p = ifap; p != NULL; p = p->ifa_next)
+	{
+		if (p->ifa_addr && p->ifa_addr->sa_family == AF_LINK)
+		{
+			addr_in = (struct sockaddr_in *)p->ifa_addr;
+			a = (htonl(addr_in->sin_addr.s_addr) >> 0x18) & 0xFF;
+			if (a == 127)
+				continue;
+#ifdef __linux__
+			struct ifreq ifr;
+			int fd;
+			fd = socket(AF_INET, SOCK_DGRAM, 0);
+			if (fd < 0)
+				continue;
+			strncpy(ifr.ifr_name, p->ifa_name, IFNAMSIZ);
+			if (ioctl(fd, SIOCGIFHWADDR, &ifr) < 0)
+			{
+				close(fd);
+				continue;
+			}
+			memcpy(mac, ifr.ifr_hwaddr.sa_data, 6);
+#else
+			struct sockaddr_dl *sdl;
+			sdl = (struct sockaddr_dl*)p->ifa_addr;
+			memcpy(mac, LLADDR(sdl), sdl->sdl_alen);
+#endif
+			if (MACADDR_IS_ZERO(mac))
+				continue;
+			ret = 0;
+			break;
+		}
+	}
+	freeifaddrs(ifap);
+#else
+	struct if_nameindex *ifaces, *if_idx;
+	struct ifreq ifr;
+	int fd;
+
+	memset(&mac, '\0', sizeof(mac));
+	/* Get the spatially unique node identifier */
+	fd = socket(AF_INET, SOCK_DGRAM, 0);
+	if (fd < 0)
+		return ret;
+
+	ifaces = if_nameindex();
+	if (!ifaces)
+		return ret;
+
+	for (if_idx = ifaces; if_idx->if_index; if_idx++)
+	{
+		strncpy(ifr.ifr_name, if_idx->if_name, IFNAMSIZ);
+		if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0)
+			continue;
+		if (ifr.ifr_ifru.ifru_flags & IFF_LOOPBACK)
+			continue;
+		if (ioctl(fd, SIOCGIFHWADDR, &ifr) < 0)
+			continue;
+		if (MACADDR_IS_ZERO(ifr.ifr_hwaddr.sa_data))
+			continue;
+		memcpy(mac, ifr.ifr_hwaddr.sa_data, 6);
+		ret = 0;
+		break;
+	}
+	if_freenameindex(ifaces);
+	close(fd);
+#endif
+	if (ret == 0)
+	{
+		if (len > 12)
+			sprintf(buf, "%02x%02x%02x%02x%02x%02x",
+			        mac[0]&0xFF, mac[1]&0xFF, mac[2]&0xFF,
+			        mac[3]&0xFF, mac[4]&0xFF, mac[5]&0xFF);
+		else if (len == 6)
+			memmove(buf, mac, 6);
+	}
+	return ret;
+}