Re: Remote IP setup of devices in a network

[David Woodhouse <dwmw2@infradead.org>]

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On Tue, 2011-11-08 at 20:31 +0100, Sam Ravnborg wrote:
> On Tue, Nov 08, 2011 at 07:11:09PM +0000, David Woodhouse wrote:
> > On Tue, 2011-11-08 at 19:54 +0100, Sam Ravnborg wrote:
> > > The idea is to use an UDP broadcast to discover all devices,
> > > and a similar UDP broadcast to configure the devices.
> > > In the latter the MAC will be the key to address individual devices.
> > 
> > You could almost be describing link-local IPv6. Each device
> > automatically gets an IPv6 address based on its MAC address, which you
> > can use for unicast addressing. The broadcast (or multicast) bit is easy
> > enough too.
> 
> We are forced to use a IPv4 network where we need to keep the devices
> in the same network as a potential router.

Note that to use *link-local* IPv6 you don't need any co-operation from
infrastructure. You don't need global routing; you don't need to be
generally operating in 21st century conditions. If you have an
Ethernet-like link between your devices, link-local IPv6 should work
fine.

-- 
dwmw2



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