From 1cbc43a41b10524c55be17984dc11bf4db6672b2 Mon Sep 17 00:00:00 2001
From: Scott Moser <smoser@ubuntu.com>
Date: Sun, 9 Feb 2014 16:10:03 +0000
Subject: Mention ssh-keygen in ssh fingerprint changed warning

Author: Chris Lamb <lamby@debian.org>
Bug: https://bugzilla.mindrot.org/show_bug.cgi?id=1843
Bug-Ubuntu: https://bugs.launchpad.net/bugs/686607
Last-Update: 2017-08-22

Patch-Name: mention-ssh-keygen-on-keychange.patch
---
 sshconnect.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/sshconnect.c b/sshconnect.c
index 96a595e8a..60cff2d87 100644
--- a/sshconnect.c
+++ b/sshconnect.c
@@ -1259,9 +1259,13 @@ check_host_key(char *hostname, const struct ssh_conn_info *cinfo,
 			error("%s. This could either mean that", key_msg);
 			error("DNS SPOOFING is happening or the IP address for the host");
 			error("and its host key have changed at the same time.");
-			if (ip_status != HOST_NEW)
+			if (ip_status != HOST_NEW) {
 				error("Offending key for IP in %s:%lu",
 				    ip_found->file, ip_found->line);
+				error("  remove with:");
+				error("  ssh-keygen -f \"%s\" -R \"%s\"",
+				    ip_found->file, ip);
+			}
 		}
 		/* The host key has changed. */
 		warn_changed_key(host_key);
@@ -1270,6 +1274,9 @@ check_host_key(char *hostname, const struct ssh_conn_info *cinfo,
 		error("Offending %s key in %s:%lu",
 		    sshkey_type(host_found->key),
 		    host_found->file, host_found->line);
+		error("  remove with:");
+		error("  ssh-keygen -f \"%s\" -R \"%s\"",
+		    host_found->file, host);
 
 		/*
 		 * If strict host key checking is in use, the user will have
