===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/ssh/session.c,v
retrieving revision 1.292
retrieving revision 1.293
diff -u -r1.292 -r1.293
--- src/usr.bin/ssh/session.c	2017/09/12 06:32:07	1.292
+++ src/usr.bin/ssh/session.c	2017/10/23 05:08:00	1.293
@@ -1,4 +1,4 @@
-/* $OpenBSD: session.c,v 1.292 2017/09/12 06:32:07 djm Exp $ */
+/* $OpenBSD: session.c,v 1.293 2017/10/23 05:08:00 djm Exp $ */
 /*
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
  *                    All rights reserved
@@ -124,6 +124,7 @@
 extern int startup_pipe;
 extern void destroy_sensitive_data(void);
 extern Buffer loginmsg;
+char *tun_fwd_ifnames; /* serverloop.c */
 
 /* original command from peer. */
 const char *original_command = NULL;
@@ -834,6 +835,8 @@
 	free(laddr);
 	child_set_env(&env, &envsize, "SSH_CONNECTION", buf);
 
+	if (tun_fwd_ifnames != NULL)
+		child_set_env(&env, &envsize, "SSH_TUNNEL", tun_fwd_ifnames);
 	if (auth_info_file != NULL)
 		child_set_env(&env, &envsize, "SSH_USER_AUTH", auth_info_file);
 	if (s->ttyfd != -1)