From f74399985cb95da0afe370a71979d6c243038f32 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dag-Erling=20Sm=C3=B8rgrav?= <des@FreeBSD.org>
Date: Sun, 14 Apr 2013 12:55:39 +0000
Subject: [PATCH] Apply a patch from OpenSSH bugzilla #2057 to silence
 "received disconnect" errors in the common case (i.e. client intentionally
 disconnected).

---
 packet.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/packet.c b/packet.c
index 9326ddea6d64..3f111ed93cde 100644
--- a/packet.c
+++ b/packet.c
@@ -1460,7 +1460,11 @@ packet_read_poll_seqnr(u_int32_t *seqnr_p)
 			case SSH2_MSG_DISCONNECT:
 				reason = packet_get_int();
 				msg = packet_get_string(NULL);
-				error("Received disconnect from %s: %u: %.400s",
+				/* Ignore normal client exit notifications */
+				do_log2(active_state->server_side &&
+				    reason == SSH2_DISCONNECT_BY_APPLICATION ?
+				    SYSLOG_LEVEL_DEBUG1 : SYSLOG_LEVEL_ERROR,
+				    "Received disconnect from %s: %u: %.400s",
 				    get_remote_ipaddr(), reason, msg);
 				xfree(msg);
 				cleanup_exit(255);