diff -uNr --exclude=*.orig work.old/ztelnet/arpa/tel-lnx.h work/ztelnet/arpa/tel-lnx.h
--- work.old/ztelnet/arpa/tel-lnx.h	Sun Apr 23 02:17:21 1995
+++ work/ztelnet/arpa/tel-lnx.h	Thu Jan  1 09:00:00 1970
@@ -1,4 +0,0 @@
-#include "/usr/include/arpa/telnet.h"
-#define TELOPT_ENVIRON  36      /* Environment variables */
-#define    ENV_VALUE       0
-#define    ENV_VAR       1