Index: usb-unix.c
===================================================================
--- usb-unix.c	(revision 6436)
+++ usb-unix.c	(working copy)
@@ -80,7 +80,16 @@
 
   do
   {
+#ifdef __NetBSD__
    /*
+    * NetBSD's ulpt driver currently does not support the
+    * back-channel...
+    */
+
+    use_bc = 0;
+
+#else
+   /*
     * Disable backchannel data when printing to Brother, Canon, or
     * Minolta USB printers - apparently these printers will return
     * the IEEE-1284 device ID over and over and over when they get
@@ -91,6 +100,7 @@
              strcasecmp(hostname, "Canon") &&
              strcasecmp(hostname, "Konica Minolta") &&
              strcasecmp(hostname, "Minolta");
+#endif /* __NetBSD__ */
 
     if ((device_fd = open_device(uri, &use_bc)) == -1)
     {
@@ -519,7 +529,12 @@
   }
 #else
   {
-    if ((fd = open(uri + 4, O_RDWR | O_EXCL)) < 0)
+    if (use_bc)
+      fd = open(uri + 4, O_RDWR | O_EXCL);
+    else
+      fd = -1;
+
+    if (fd < 0)
     {
       fd      = open(uri + 4, O_WRONLY | O_EXCL);
       *use_bc = 0;