3913 there is no dialup, only zuul

*** 20,29 ****
--- 20,32 ----
   */
  /*
   * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
+ /*
+  * Copyright (c) 2013, Joyent, Inc. All rights reserved.
+  */
  
  /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  /*        All Rights Reserved   */
  
  /*
*** 1249,1260 ****
  }
  
  int
  main(int argc, char *argv[])
  {
-         char *ttyn = ttyname(STDERR_FILENO);
- 
          int qflag = 0, needlog = 1, nosync = 0;
          int fast_reboot = 0;
          int prom_reboot = 0;
          uintptr_t mdep = NULL;
          int cmd, fcn, c, aval, r;
--- 1252,1261 ----
*** 1322,1332 ****
                          break;
                  case 'q':
                          qflag = 1;
                          break;
                  case 'y':
!                         ttyn = NULL;
                          break;
                  case 'f':
                          fast_reboot = 1;
                          break;
                  case 'p':
--- 1323,1335 ----
                          break;
                  case 'q':
                          qflag = 1;
                          break;
                  case 'y':
!                         /*
!                          * Option ignored for backwards compatibility.
!                          */
                          break;
                  case 'f':
                          fast_reboot = 1;
                          break;
                  case 'p':
*** 1446,1468 ****
  #if 0   /* For debugging */
          if (mdep != NULL)
                  (void) fprintf(stderr, "mdep = %s\n", (char *)mdep);
  #endif
  
-         if (fcn != AD_BOOT && ttyn != NULL &&
-             strncmp(ttyn, "/dev/term/", strlen("/dev/term/")) == 0) {
-                 /*
-                  * TRANSLATION_NOTE
-                  * Don't translate ``halt -y''
-                  */
-                 (void) fprintf(stderr,
-                     gettext("%s: dangerous on a dialup;"), cmdname);
-                 (void) fprintf(stderr,
-                     gettext("use ``%s -y'' if you are really sure\n"), cmdname);
-                 goto fail;
-         }
- 
          if (needlog) {
                  char *user = getlogin();
                  struct passwd *pw;
                  char *tty;
  
--- 1449,1458 ----