linux-kernel - Re: [PATCH] pch_gbe: Use a randomly generated MAC instead of failing probe

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4F14913D.6090404@hp.com>
Date:	Mon, 16 Jan 2012 13:06:05 -0800
From:	Rick Jones <rick.jones2@...com>
To:	David Laight <David.Laight@...LAB.COM>
CC:	Arjan van de Ven <arjan@...ux.intel.com>,
	Darren Hart <dvhart@...ux.intel.com>,
	Alan Cox <alan@...ux.intel.com>,
	Tomoya MORINAGA <tomoya.rohm@...il.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	David Miller <davem@...emloft.net>,
	linux-kernel@...r.kernel.org, jeffrey.t.kirsher@...el.com,
	paul.gortmaker@...driver.com, jdmason@...zu.us,
	netdev@...r.kernel.org
Subject: Re: [PATCH] pch_gbe: Use a randomly generated MAC instead of failing
 probe

On 01/16/2012 08:20 AM, David Laight wrote:
> Since multiple interfaces on a single system are unlikely
> to be connected to the same LAN segment, it doesn't really
> matter if they use same MAC address.
>
> For a long time sun solaris systems used the same MAC
> address (based on the system id) on all their ethernet
> interfaces.

And there was a perhaps small, but certainly non-trivial stream of 
people asking how to change that because their system(s) were indeed 
multiple ports connected to the same broadcast domain.

Long since then Sun changed their defaults, and we've gotten things like 
bonding, so I think any assumption that a system with multiple ports 
will not have then connected to the same broadcast domain is brittle at 
best.

rick jones
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/