[avahi] Linsys E4200: Received response with invalid source port

[Eric Martel]

But doesn't the draft also specify that "Multicast DNS implementations
MUST silently ignore any Multicast DNS Responses they receive where the
source UDP port is not 5353."? Shouldn't avahi therefore ignore thos
responses instead of reporting them? Is there a way for me to tell it so?

Le 2011-07-18 13:43, Christiano F. Haesbaert a écrit :
> The source port for MDNS must be 5353 if not a unicast legacy query/answer.
>
> This is a MUST in the MDNS draft.
>
> On 18 July 2011 11:50, Eric Martel <shrodi+avahi at gmail.com> wrote:
>> (Please tell me if this is not the good place to ask this question)
>>
>> Hi,
>>
>> I just changed my router from a D-Link DI-624 to a Cisco Linksys E4200.
>> Almost instantly, all of my Linux syslogs (I run many computers on my
>> network, some Mandriva, others Ubuntu, different versions) began being
>> clogged (every 30 seconds) with messages such as the following:
>>
>>    Jul 18 08:53:42 myhost avahi-daemon[7054]: Received response from
>> host 192.168.1.1 with invalid source port 32768 on interface 'eth1.0'
>>
>> where 192.168.1.1 is the address of the router.
>>
>> The only apparently relevant post I found on the Internet is at
>> http://homecommunity.cisco.com/t5/Wireless-Routers/Received-response-from-host-router-IP-address-with-invalid/td-p/405931,
>> with an interesting and detailed technical insight at what might be
>> going wrong, but with no solution offered. This post hints at errors
>> that would be both on the side of the router and Avahi (but I can't tell
>> since I'm a total newb in that mDNS thingy).
>>
>> Contacting Linksys tech support was (big surprise...) a dead end for me,
>> so I thought I might turn for your help guys: is there anything I can do
>> from the avahi-daemon point of view to at least prevent that specific
>> message from clogging my syslogs, but without disabling avahi-daemon
>> since I use it? Or can anybody think of something (generally speaking) I
>> could configure on the router to prevent this?
>>
>> Thanks!
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>>
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