--- vtun-2.5b1/configure.in	Thu Nov  8 10:04:44 2001
+++ vtun-2.5b1-p/configure.in	Thu Nov  8 13:04:35 2001
@@ -166,6 +166,8 @@
 
 AC_MSG_RESULT()
 
+AC_CHECK_FUNCS([getpt grantpt unlockpt ptsname])
+
 OS_REL=`uname -r | tr -d '[A-Za-z\-\_\.]'`
 case $host_os in
 	*linux*)
--- vtun-2.5b1/generic/pty_dev.c	Mon Nov 20 08:57:33 2000
+++ vtun-2.5b1-p/generic/pty_dev.c	Thu Nov  8 10:11:44 2001
@@ -38,11 +38,27 @@
  */  
 int pty_open(char *sl_name)
 {
+    int  mr_fd;
+#ifdef HAVE_GETPT && HAVE_GRANTPT && HAVE_UNLOCKPT && HAVE_PTSNAME
+    char *ptyname;
+
+    if((mr_fd=getpt()) < 0)
+ 	return -1;
+    if(grantpt(mr_fd) != 0)
+	return -1;
+    if(unlockpt(mr_fd) != 0)
+	return -1;
+    if ((ptyname = (char*)ptsname(mr_fd)) == NULL)
+	return -1;
+    strcpy(sl_name, ptyname);
+    return mr_fd;
+
+#else
+
     char ptyname[] = "/dev/ptyXY";
     char ch[] = "pqrstuvwxyz";
     char digit[] = "0123456789abcdefghijklmnopqrstuv";
     int  l, m;
-    int  mr_fd;
 
     /* This algorithm should work for almost all standard Unices */	
     for(l=0; ch[l]; l++ ) {
@@ -64,6 +80,7 @@
 	    }
 	}
 	return -1;
+#endif
 }
 
 /* Write frames to PTY device */