[avahi] Strange MDNS response from Axis cameras

Iván Sánchez Ortega i.sanchez at mirame.net
Tue Feb 7 11:26:38 PST 2006

Hash: SHA1

El Martes 07 de Febrero de 2006 19:03, Marc Krochmal escribió:
> [...] there's still many poor customers in the world that don't have the 
> benefits of Zeroconf, [...] This doesn't work when you have two cameras on 
> the network that both use the same IP [...]

I can see your point. If Avahi returned the 192.168.x.x IPs for the cameras, 
I'd be running into that problem. So the right way for Avahi to do this is, 
as you say, to use the 169.254.x.x addresses...

(I now wonder if windoze's uPnP can handle two cameras with the same 
192.168.x.x IP... I guess not)

> 169.254.x.x  [...] So it sounds like your computer doesn't know about this 
> address range. 

Yes; I now have a IP alias (eth0:0) with a 169.254.x.x address.

However, the default network configuration for most Linux boxes is to have 
just one IP, and not be aware of the network. I guess that making 
Avahi aware of the routing table to decide whether to get the 169.154.x.x or 
the 192.168.x.x IP would be a real mess.

> Also, here's a Q&A that explains how to make this work on various
> OSes including Linux.
> <http://developer.apple.com/qa/qa2004/qa1357.html>

I'll have a look.

Thanks *very* much for the info,
- -- 
- ----------------------------------
Iván Sánchez Ortega <ivansanchez at escomposlinux.org> <i.sanchez at mirame.net>

The ultimate security is your understanding of reality.
                                    --H. Stanley Judd
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