RE: [uml-devel] Randomize on MAC address when bringing up ethernet iface

2006-05-31 Thread Brock, Anthony - NET
> -Original Message- > On Tue, May 30, 2006 at 08:12:59PM +0200, Blaisorblade wrote: > > 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

[uml-devel] Re: Randomize on MAC address when bringing up ethernet iface

2006-05-31 Thread Jason Lunz
[EMAIL PROTECTED] said: > So what is the second bit? I only know about the broadcast/multicast bit, and > no one has bothered clueing me in on any other special bits :-) the other one's the "locally administered" bit. It's a lot like rfc1918 address space in ipv4, only for ethernet. wikipedia's

Re: [uml-devel] Randomize on MAC address when bringing up ethernet iface

2006-05-31 Thread Jeff Dike
On Tue, May 30, 2006 at 08:12:59PM +0200, Blaisorblade wrote: > 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. > Conditions: the broadcast bit must be 0

Re: [uml-devel] Re: Randomize on MAC address when bringing up ethernet iface

2006-05-31 Thread Blaisorblade
On Wednesday 31 May 2006 19:09, Jason Lunz wrote: > [EMAIL PROTECTED] 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

[uml-devel] Re: Randomize on MAC address when bringing up ethernet iface

2006-05-31 Thread Jason Lunz
[EMAIL PROTECTED] 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 es

[uml-devel] Randomize on MAC address when bringing up ethernet iface

2006-05-31 Thread Blaisorblade
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. Conditions: the broadcast bit must be 0 and the "locally-assigned address flag" must be 1 (as likely we alr

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