[avahi] Strange MDNS response from Axis cameras

Marc Krochmal marc at apple.com
Tue Feb 7 15:47:56 PST 2006

On Feb 7, 2006, at 11:26 AM, Iván Sánchez Ortega wrote:

> 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)

Nope, IP networking in general can't handle two machines with the  
same IP address.

> [...]
>> 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.

Right, you don't need to configure an additional IP address on your  
box.  You just need to add a routing table entry indicating that  
169.254 addresses are local.


More information about the avahi mailing list