diff -r 3c4c3d48a835 tools/libxl/xl_cmdimpl.c
--- a/tools/libxl/xl_cmdimpl.c	Thu Aug 26 11:16:56 2010 +0100
+++ b/tools/libxl/xl_cmdimpl.c	Thu Aug 26 17:51:27 2010 +0200
@@ -41,6 +41,14 @@
 #include "libxlutil.h"
 #include "xl.h"
 
+#define NET_DEFAULT_ADDRESS       "127.0.0.1"
+#if defined(__linux__)
+#define NET_DEFAULT_BRIDGE        "xenbr0"
+#endif
+#if defined(__NetBSD__)
+#define NET_DEFAULT_BRIDGE        "bridge0"
+#endif
+
 #define CHK_ERRNO( call ) ({                                            \
         int chk_errno = (call);                                         \
         if (chk_errno < 0) {                                                \
@@ -309,7 +317,7 @@ static void init_dm_info(libxl_device_mo
 
     dm_info->stdvga = 0;
     dm_info->vnc = 1;
-    dm_info->vnclisten = "127.0.0.1";
+    dm_info->vnclisten = NET_DEFAULT_ADDRESS;
     dm_info->vncdisplay = 0;
     dm_info->vncunused = 1;
     dm_info->keymap = NULL;
@@ -339,7 +347,7 @@ static void init_nic_info(libxl_device_n
     nic_info->mac[4] = 1 + (int) (0xff * (rand() / (RAND_MAX + 1.0)));
     nic_info->mac[5] = 1 + (int) (0xff * (rand() / (RAND_MAX + 1.0)));
     nic_info->ifname = NULL;
-    nic_info->bridge = strdup("xenbr0");
+    nic_info->bridge = strdup(NET_DEFAULT_BRIDGE);
     CHK_ERRNO( asprintf(&nic_info->script, "%s/vif-bridge",
                libxl_xen_script_dir_path()) );
     nic_info->nictype = NICTYPE_IOEMU;
@@ -365,7 +373,7 @@ static void init_net2_info(libxl_device_
     net2_info->back_trusted = 1;
     net2_info->filter_mac = 1;
     net2_info->max_bypasses = 5;
-    net2_info->bridge = "xenbr0";
+    net2_info->bridge = NET_DEFAULT_BRIDGE;
 }
 
 static void init_vfb_info(libxl_device_vfb *vfb, int dev_num)
@@ -373,7 +381,7 @@ static void init_vfb_info(libxl_device_v
     memset(vfb, 0x00, sizeof(libxl_device_vfb));
     vfb->devid = dev_num;
     vfb->vnc = 1;
-    vfb->vnclisten = "127.0.0.1";
+    vfb->vnclisten = NET_DEFAULT_ADDRESS;
     vfb->vncdisplay = 0;
     vfb->vncunused = 1;
     vfb->keymap = NULL;