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From: Jason Lunz <lunz@falooley.org>
To: user-mode-linux-devel@lists.sourceforge.net
Subject: [uml-devel] Re: Randomize on MAC address when bringing up ethernet iface
Date: Wed, 31 May 2006 17:09:29 +0000 (UTC)	[thread overview]
Message-ID: <e5kik9$k5d$1@sea.gmane.org> (raw)
In-Reply-To: 200605302013.00091.blaisorblade@yahoo.it

blaisorblade@yahoo.it said:
> I've being thinking to this and I'm wondering why we shouldn't do it. When we 
> have set no IP or 0.0.0.0, which is not a unique IP, and we bring it up, we 
> should choose a random MAC to use.

I agree this makes sense. Currently I'm forced to do it in a script.

It's especially silly that uml virtual ethernet devices *don't* get
random mac addresses automatically, while tuntap virtual ethernet
devices *do* (in the same kernel tree!).

> Conditions: the broadcast bit must be 0 and the "locally-assigned address 
> flag" must be 1 (as likely we already do).

random_ether_addr() in include/linux/etherdevice.h already takes care of
this.

Jason



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  reply	other threads:[~2006-05-31 17:10 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-05-30 18:12 [uml-devel] Randomize on MAC address when bringing up ethernet iface Blaisorblade
2006-05-31 17:09 ` Jason Lunz [this message]
2006-05-31 17:24   ` [uml-devel] " Blaisorblade
2006-05-31 19:05 ` [uml-devel] " Jeff Dike
2006-05-31 19:56   ` [uml-devel] " Jason Lunz
2006-06-01  8:40   ` [uml-devel] " Blaisorblade

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