*** /usr/amiga/src/cmd/slattach/slattach.c.orig	Wed Nov 11 17:55:00 1992
--- /usr/amiga/src/cmd/slattach/slattach.c	Wed Nov 11 17:55:12 1992
***************
*** 27,33 ****
--- 27,39 ----
  #define SLIP_WHICH_INTERFACE 'slwh'
  #endif
  
+ #define SLIP_GET_CONF_FLAGS  'slgc'
+ #define SLIP_SET_CONF_FLAGS  'slsc'
  
+ #define	SC_COMPRESS	0x0002		/* compress TCP traffic */
+ #define	SC_NOICMP	0x0004		/* supress ICMP traffic */
+ #define	SC_AUTOCOMP	0x0008		/* auto-enable TCP compression */
+ 
  static void catch(int sig)
  {
  }
***************
*** 63,72 ****
      int n;
      char buf[512];
      struct termios termios;
  
      if (argc < 3)
      {
! 	fprintf(stderr, "Usage: %s speed local-address remote-address [ifconfig args]\n", argv[0]);
  	return -1;
      }
  
--- 69,79 ----
      int n;
      char buf[512];
      struct termios termios;
+     int slip_flags, i;
  
      if (argc < 3)
      {
! 	fprintf(stderr, "Usage: %s speed local-address remote-address [autocomp][compress][noicmp] [ifconfig args]\n", argv[0]);
  	return -1;
      }
  
***************
*** 96,106 ****
  	return 1;
      }
  
      {
- 	int i;
  	char *p = buf;
  	p += sprintf(p, "ifconfig sl%d", n);
  	for ( i=2 ; i<argc ; ++i )
  	    p += sprintf(p, " %s", argv[i]);
  	p += sprintf(p, " up");
      }
--- 103,138 ----
  	return 1;
      }
  
+ 
+     for (i = 2, slip_flags = 0; i < argc; i++)
+       if (! strcmp (argv[i], "autocomp"))
+ 	{
+ 	  slip_flags |= SC_AUTOCOMP;
+ 	  argv[i] = 0;
+ 	}
+       else if (! strcmp (argv[i], "compress"))
+ 	{
+ 	  slip_flags |= SC_COMPRESS;
+ 	  argv[i] = 0;
+ 	}
+       else if (! strcmp (argv[i], "noicmp"))
+ 	{
+ 	  slip_flags |= SC_NOICMP;
+ 	  argv[i] = 0;
+ 	}
+ 
+     if (ioctl (0, SLIP_SET_CONF_FLAGS, slip_flags) < 0)
+       {
+ 	fprintf (stderr, "%s: SLIP_SET_CONF_FLAGS FAILED: %s\n",
+ 		 argv[0], strerror (errno));
+ 	return 1;
+       }
+ 
      {
  	char *p = buf;
  	p += sprintf(p, "ifconfig sl%d", n);
  	for ( i=2 ; i<argc ; ++i )
+ 	  if (argv[i])
  	    p += sprintf(p, " %s", argv[i]);
  	p += sprintf(p, " up");
      }