[avahi] avahi-daemon with Bonjour clients

[Trent Lloyd]

Lennart Poettering wrote:
> On Thu, 12.07.07 09:32, Gavin Panella (gavin at premolo.com) wrote:
>
>   
>> I've had a similar problem with a machine (called masaq) this week.  
>> Services were being discovered from other hosts on the network (a  
>> Linux box and a few Macs), but the address of masaq was not being  
>> resolved, and masaq could see nothing.
>>
>> Eventually I noticed (with Wireshark) that multicast was being  
>> transmitted fine from masaq, but no multicast was ever reaching it.  
>> Plugging masaq's NIC into a different switch resolved it. The problem  
>> resurfaced when I plugged masaq back into the HomePlug (Devolo dLAN  
>> Highspeed) adapter that it had previously been connected to.
>>
>> Now that I've seen the symptoms I could probably spot this problem  
>> sooner next time, but could anything be done automatically (when  
>> Avahi starts perhaps) to begin diagnosis of problems with multicast?
>>     
>
> I don't see how this could be done. Suggestions welcome.
>
> Honestly I think these are all Linux driver bugs, because Multicasting
> is still a more exotic feature that doesn't get that much testing.
>   
I've also found a number of switches that filter out multicast, often 
Switch-APs the multicast is not forwarded between switch ports and the 
wireless

Some have an 'IGMP' option which will fix this.

Trent
> Lennart
>
>