[avahi] avahi-daemon with Bonjour clients
Trent Lloyd
lathiat at bur.st
Thu Jul 12 05:27:25 PDT 2007
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
>
>
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