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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,
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Subject: svn commit: r266462 - head/sys/net
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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)