From owner-svn-src-head@FreeBSD.ORG  Tue May 20 02:59:14 2014
Return-Path: <owner-svn-src-head@FreeBSD.ORG>
Delivered-To: svn-src-head@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 7D781951;
 Tue, 20 May 2014 02:59:14 +0000 (UTC)
Received: from svn.freebsd.org (svn.freebsd.org
 [IPv6:2001:1900:2254:2068::e6a:0])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 6B73A2244;
 Tue, 20 May 2014 02:59:14 +0000 (UTC)
Received: from svn.freebsd.org ([127.0.1.70])
 by svn.freebsd.org (8.14.8/8.14.8) with ESMTP id s4K2xEa4055335;
 Tue, 20 May 2014 02:59:14 GMT (envelope-from grehan@svn.freebsd.org)
Received: (from grehan@localhost)
 by svn.freebsd.org (8.14.8/8.14.8/Submit) id s4K2xECK055334;
 Tue, 20 May 2014 02:59:14 GMT (envelope-from grehan@svn.freebsd.org)
Message-Id: <201405200259.s4K2xECK055334@svn.freebsd.org>
From: Peter Grehan <grehan@FreeBSD.org>
Date: Tue, 20 May 2014 02:59:14 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: svn commit: r266462 - head/sys/net
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
 <svn-src-head.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head/>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 20 May 2014 02:59:14 -0000

Author: grehan
Date: Tue May 20 02:59:13 2014
New Revision: 266462
URL: http://svnweb.freebsd.org/changeset/base/266462

Log:
  Bump bhyve allocation up to 20 bits to avoid
  birthday-paradox style address collisions when
  bhyve VMs are connected to the same broadcoast
  domain and are using pseudo-random allocations.
  
  Reviewed by:	gnn
  MFC after:	1 week

Modified:
  head/sys/net/ieee_oui.h

Modified: head/sys/net/ieee_oui.h
==============================================================================
--- head/sys/net/ieee_oui.h	Tue May 20 01:17:59 2014	(r266461)
+++ head/sys/net/ieee_oui.h	Tue May 20 02:59:13 2014	(r266462)
@@ -62,6 +62,6 @@
  * allocated for any reason.
  */
 
-/* Allocate 64K to bhyve */
+/* Allocate 20 bits to bhyve */
 #define OUI_FREEBSD_BHYVE_LOW	OUI_FREEBSD(0x000001)
-#define OUI_FREEBSD_BHYVE_HIGH	OUI_FREEBSD(0x00ffff)
+#define OUI_FREEBSD_BHYVE_HIGH	OUI_FREEBSD(0x0fffff)