Set BSD tuns to broadcast mode. On OpenBSD, this enables IPv6 on the tun device!

[tinc] / src / bsd / device.c

diff --git a/src/bsd/device.c b/src/bsd/device.c
index 045fc18..5e7a198 100644 (file)
--- a/src/bsd/device.c
+++ b/src/bsd/device.c
@@ -49,10 +49,6 @@ static device_type_t device_type = DEVICE_TYPE_TUN;
 #endif
 
 bool setup_device(void) {
-#ifdef TUNSIFHEAD
-       const int zero = 0;
-       const int one = 1;
-#endif
        char *type;
 
        cp();
@@ -91,20 +87,40 @@ bool setup_device(void) {
                        device_type = DEVICE_TYPE_TUN;
                case DEVICE_TYPE_TUN:
 #ifdef TUNSIFHEAD
+               {       
+                       const int zero = 0;
                        if(ioctl(device_fd, TUNSIFHEAD, &zero, sizeof zero) == -1) {
                                logger(LOG_ERR, _("System call `%s' failed: %s"), "ioctl", strerror(errno));
                                return false;
                        }
+               }
+#endif
+#if defined(TUNSIFMODE) && defined(IFF_BROADCAST) && defined(IFF_MULTICAST)
+               {
+                       const int mode = IFF_BROADCAST | IFF_MULTICAST;
+                       ioctl(device_fd, TUNSIFMODE, &mode, sizeof mode);
+               }
 #endif
+
                        device_info = _("Generic BSD tun device");
                        break;
                case DEVICE_TYPE_TUNIFHEAD:
 #ifdef TUNSIFHEAD
+               {
+                       const int one = 1;
                        if(ioctl(device_fd, TUNSIFHEAD, &one, sizeof one) == -1) {
                                logger(LOG_ERR, _("System call `%s' failed: %s"), "ioctl", strerror(errno));
                                return false;
                        }
+               }
 #endif
+#if defined(TUNSIFMODE) && defined(IFF_BROADCAST) && defined(IFF_MULTICAST)
+               {
+                               const int mode = IFF_BROADCAST | IFF_MULTICAST;
+                               ioctl(device_fd, TUNSIFMODE, &mode, sizeof mode);
+               }
+#endif
+
                        device_info = _("Generic BSD tun device");
                        break;
                case DEVICE_TYPE_TAP: