upstream: Add BindInterface ssh_config directive and -B

command-line argument to ssh(1) that directs it to bind its outgoing
connection to the address of the specified network interface.

BindInterface prefers to use addresses that aren't loopback or link-
local, but will fall back to those if no other addresses of the
required family are available on that interface.

Based on patch by Mike Manning in bz#2820, ok dtucker@

OpenBSD-Commit-ID: c5064d285c2851f773dd736a2c342aa384fbf713

1 files changed, 2 insertions, 1 deletions

diff --git a/readconf.h b/readconf.h
index 34aad83cf..f4d9e2b26 100644
--- a/readconf.h
+++ b/readconf.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: readconf.h,v 1.124 2017/10/21 23:06:24 millert Exp $ */
+/* $OpenBSD: readconf.h,v 1.125 2018/02/23 02:34:33 djm Exp $ */
 
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
@@ -81,6 +81,7 @@ typedef struct {
         char   *user_hostfiles[SSH_MAX_HOSTS_FILES];
         char   *preferred_authentications;
         char   *bind_address;   /* local socket address for connection to sshd */
+        char   *bind_interface; /* local interface for bind address */
         char   *pkcs11_provider; /* PKCS#11 provider */
         int     verify_host_key_dns;    /* Verify host key using DNS */