[avahi] Problem with avahi and wireless driver (ath9k)

[Ted Percival]

Could be a driver bug on the AP then, especially if your ath9k NIC has
multicast working with another AP. Debian "Etch" is getting long in the
tooth, updating its kernel might help. On the other hand it could just
be firewalling. Check `iptables -vL` to ensure there's no filter
blocking udp/5353 in either direction from any address - on both machines.



Tor Krill wrote:
> Hi Ted,
>
> Thx for a quick reply.
>
> On mån, 2009-03-30 at 12:05 -0600, Ted Percival wrote:
>   
>> Some drivers don't process multicast packets properly. You can work
>> around it by setting the "promisc" flag on the interface. See
>> http://avahi.org/wiki/Avah4users#FAQ number 15.
>>     
>
> Ok, tried that as well, no luck :(
>
>   
>> ath9k is quite popular, I have a vague memory that its handling of
>> multicast packets was fixed in a fairly recent Linux kernel, around
>> 2.6.29 or so.
>>     
>
> Yes, i should guess thats one of the more popular ones. I'm on 2.6.29
> and the AP is running Debian Etch, Avahi 0.6.16. Client is Ubuntu 8.10,
> Avahi 0.6.23, with an intel chipset.
>
> But all things point towards the driver so i really should try to get
> some info from there.
>
> /Tor  
>
>   
>> Tor Krill wrote:
>>     
>>> Hi,
>>>
>>> I'm having problems with Avahi and and my AP with a Atheros ath9k card.
>>> With a client connected to the AP the AP sees all announcements from the
>>> client but the client does not se anything announced from the AP.
>>>
>>> I have tried to enable allmulti on all participating devices, no luck.
>>> And when connecting the client to another AP it works fine. Further more
>>> when connecting to the "AP" via wire everything works. Thus i suspect
>>> the Atheros wireless driver ath9k.
>>>
>>> Anyone got any clues on this?
>>>
>>> Best Regards,
>>>
>>> /Tor 
>>>