From 3b8cb7cf726b08e6e8089a10cafd7d5664fe0a9b Mon Sep 17 00:00:00 2001
From: "Eric S. Raymond" <esr@thyrsus.com>
Date: Mon, 26 Mar 2012 07:59:00 -0400
Subject: [PATCH] Deal with ssh spoofing messages.

---
 ssh-installkeys | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/ssh-installkeys b/ssh-installkeys
index 4ef8f27..900b1da 100755
--- a/ssh-installkeys
+++ b/ssh-installkeys
@@ -609,7 +609,12 @@ class ssh_session:
             elif seen == 5:
                 sys.stderr.write("FAILURE: check hostname\n")
                 raise RuntimeError
- 
+        # Remote execution will fail noisily if the host key hes changed.
+        # Pass this message through to the user so there will be a chance
+        # to recover.
+        if '@@@' in child.before:
+            sys.stdout.write(child.before)
+            raise SystemExit, 2
         return child.before
     def ssh(self, command):
         "Execute a command on the remote host, returning its output."
-- 
2.43.0