[avahi] Avahi on Fedora 21

[Robert M. Albrecht]

Hi Trent,

I tried (2). But the services vanished after some time. avahi-browse -a 
brings them back again.

I run the Avahi on Fedora 21 inside a KVM quest machine with the virtio 
driver.

Google finds some multicast-problems with virtio, but they are several 
years old.

cu romal



Am 01.12.14 um 05:46 schrieb Trent Lloyd:
> Hi Robert,
>
> The most common cause of this issue is that the network driver is not correctly handling multicast.
>
>
> Can you please try one of these two things and let me know if it resolves the issue.  Replace ‘eth0’ with your relevant interface:
>
> (1) Leave tcpdump running (goes into promiscuous mode, and thus, all multicast packets are received, even if the network driver is broken)
> tcpdump -ni eth0
>
> (2) Enable the ‘all multicast’ flag:
> ifconfig eth0 allmulti
>
> Regards,
> Trent
>
>> On 29 Nov 2014, at 12:28 pm, Robert M. Albrecht <lists at romal.org> wrote:
>>
>> i,
>>
>> I'm running Avahi on a Fedora 20 to announce some printers to OSX boxes. I do this for 2-3 years and never had any problems.
>>
>> I now upgraded the system to Fedora 21 and something strange happens.
>>
>> Avahi announces the services perfectly. After some time (1-3 hours) the OSX do not see the printer accouncements anymore.
>>
>> If I do a
>>
>> avahi-browse -a
>>
>> the services reappear. Restarting the service does help. ps tells me, the daemon is running.
>>
>> I appended a debug switch, but there is nothing strange to be found in syslog.
>>
>> [Unit]
>> Description=Avahi mDNS/DNS-SD Stack
>> Requires=avahi-daemon.socket
>>
>> [Service]
>> Type=dbus
>> BusName=org.freedesktop.Avahi
>> ExecStart=/usr/sbin/avahi-daemon -s --debug
>> ExecReload=/usr/sbin/avahi-daemon -r
>> NotifyAccess=main
>>
>> [Install]
>> WantedBy=multi-user.target
>> Also=avahi-daemon.socket
>> Alias=dbus-org.freedesktop.Avahi.service
>>
>> Any ideas how to debug this ? Where to look ?
>>
>> Regards,
>> Robert
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>> avahi at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/avahi
>
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