Re: [Xen-devel] PCI passthrough issue

[Jean Baptiste Favre <xen-devel@xxxxxxxxxxx>]

Ok, my bad. Screen IS available on OpenWRT.
I've added it to my disk image and now have a tcpdump capture of network
traffic of my DomU

Have the same network capture from my GW so I 'll be able to investigate
deeper.

Let me know if you have specific points you want me to look at.

Regards,
JB


Le 12/01/2011 22:46, Jean Baptiste Favre a écrit :
> Le 12/01/2011 22:40, Konrad Rzeszutek Wilk a écrit :
>> On Wed, Jan 12, 2011 at 09:07:30PM +0100, Jean Baptiste Favre wrote:
>>> Le 12/01/2011 19:32, Konrad Rzeszutek Wilk a écrit :
>>>>>
>>>>> Finally, I think that my setup shall not be responsible for the fact
>>>>> that ping works, small DNS answers are received but not bigger ones
>>>>
>>>> Aah, somehow I missed that fact.
>>>
>>> Seems yes :)
>>>
>>>>> (limit seems to be around 100 bytes).
>>>>
>>>> What does wireshark or tcpdump tell you when you send the larger packets?
>>>
>>> That's one of my problem: nothing special :(
>>>
>>> I can only run tcpdump on my gateway (no SSH available on my OpenWRT
>>> domU and only xm console access is available).
>>
>> You can install (or just compile it statically) tcpdump on your OpenWRT,
>> or just hook it up to a beffier guest..
> 
> tcpdump is available on my OpenWRT domU, but I can not perform tcpdump
> and DNS lookup with only console access and AFAIK screen is not
> available on OpenWRT
> 
>>> I see DNS requests comming in, I see DNS answers going out.
>>> ARP requests are fine.
>>>
>>> As an example:
>>> dig free.fr works
>>> dig jbfavre.org works
>>> dig amazon.fr works
>>> dig amazon.com works (quite long, but works)
>>> dig google.fr fails
>>> dig google.com fails
>>
>> Fails as in response or fails halfway?
> 
> Fails as in:
> # dig google.com
> 
> ; <<>> DiG 9.7.2-P3 <<>> google.com
> ;; global options: +cmd
> ;; connection timed out; no servers could be reached
> 
>>>
>>> >From another machine in the same LAN, all requests work fine.
>>>
>>> Thought this was due to some ARP restriction setted up by default in
>>> OpenWRT, but in this case, I can not explain why some DNS lookup do work
>>> and some don't.
> 
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