Index: /trunk/src/VBox/Additions/common/VBoxGuest/VBoxGuest-netbsd.c
===================================================================
--- /trunk/src/VBox/Additions/common/VBoxGuest/VBoxGuest-netbsd.c	(revision 92501)
+++ /trunk/src/VBox/Additions/common/VBoxGuest/VBoxGuest-netbsd.c	(revision 92502)
@@ -1029,6 +1029,17 @@
 #endif
                                  UIO_SYSSPACE);
-            if (error == EEXIST)
+            if (error == EEXIST) {
                 error = 0;
+
+                /*
+                 * Since NetBSD doesn't yet have a major reserved for
+                 * vboxguest, the (first free) major we get will
+                 * change when new devices are added, so an existing
+                 * /dev/vboxguest may now point to some other device,
+                 * creating confusion (tripped me up a few times).
+                 */
+                aprint_normal("vboxguest: major %d:"
+                              " check existing /dev/vboxguest\n", cmajor);
+            }
             break;