From c0a8b01162cde669faadeaf16c75c64820a45f6c Mon Sep 17 00:00:00 2001
From: Ted Lemon <source@isc.org>
Date: Sun, 15 Mar 1998 20:47:27 +0000
Subject: [PATCH] Don't invalidate a lease if we receive an ICMP echo reply for
 it when it has a valid lease.   This can happen if some other user on the
 host pings the client after we've assigned it an address.

---
 server/dhcpd.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/server/dhcpd.c b/server/dhcpd.c
index 258f9822..8e14b034 100644
--- a/server/dhcpd.c
+++ b/server/dhcpd.c
@@ -42,7 +42,7 @@
 
 #ifndef lint
 static char ocopyright[] =
-"$Id: dhcpd.c,v 1.46 1998/02/06 01:10:28 mellon Exp $ Copyright 1995, 1996 The Internet Software Consortium.";
+"$Id: dhcpd.c,v 1.47 1998/03/15 20:47:27 mellon Exp $ Copyright 1995, 1996 The Internet Software Consortium.";
 #endif
 
 static char copyright[] =
@@ -329,6 +329,11 @@ void lease_pinged (from, packet, length)
 		return;
 	}
 
+	if (lp -> ends > cur_time) {
+		warn ("ICMP Echo reply arrived while lease %s was valid.\n",
+		      piaddr (from));
+	}
+
 	/* At this point it looks like we pinged a lease and got a
 	   response, which shouldn't have happened. */
 	free_lease_state (lp -> state, "lease_pinged");