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Re: [Qemu-devel] [PATCH] Random MAC address option
From: |
Ian Jackson |
Subject: |
Re: [Qemu-devel] [PATCH] Random MAC address option |
Date: |
Tue, 27 Jan 2009 14:28:49 +0000 |
Daniel P. Berrange writes ("Re: [Qemu-devel] [PATCH] Random MAC address
option"):
> On Tue, Jan 27, 2009 at 12:15:41PM +0200, Riku Voipio wrote:
> > I take this means -net macaddr=macrandom will give the random
> > macaddr after this patch? please document this magic in
> > qemu-doc.texi and --help.
Surely `macaddr=macrandom' is tautologous ? What's wrong with
`macaddr=random' ?
> Generating a random MAC address everytime you boot a guest seems like
> a very odd thing todo. MAC addresses should be randomly generated
> once, and then fixed for the duration of existance of that guest,
> across reboots.If you generate a random MAC on every boot, the OS will
> think its NIC has been removed, and a new one added on every boot.
Whether or not this is a problem depends on your operating system.
Indeed having a new MAC address each time can have privacy advantages
in certain IPv6 configurations!
If you want the MAC address to be persistent, where should qemu store
the MAC address ?
Ian.
- [Qemu-devel] [PATCH] Random MAC address option, Pavel Vasilyev, 2009/01/26
- [Qemu-devel] [PATCH] Replace strcmp() by strncmp(), Pavel Vasilyev, 2009/01/26
- Re: [Qemu-devel] [PATCH] Random MAC address option, malc, 2009/01/26
- Re: [Qemu-devel] [PATCH] Random MAC address option, Kevin Wolf, 2009/01/27
- Re: [Qemu-devel] [PATCH] Random MAC address option, Riku Voipio, 2009/01/27
- Re: [Qemu-devel] [PATCH] Random MAC address option, Paul Brook, 2009/01/27