[Planetlab-devel] tcp raw socket problem on new planetlab system

[Y. Charlie Hu]

I am very very sorry, I messed up my mailer. please ignore all my mails.

Charlie





Y. Charlie Hu wrote:
> Kyu,
> 
> please add a bar for One group in fig 6 (D)
> 
> it is ok that Ant outputs  one group, but that does not mean you should 
> remove
> the results for "One group". it just creates unnecessary confusion.
> 
> 
> Harsha V. Madhyastha wrote:
>> Hi Marc,
>>
>> Yes, our tool works fine on a normal Debian box without the 
>> modification that Sapan suggested. Also, the same tool worked fine on 
>> PlanetLab from '06 until July'08. So, it does look like the 
>> requirement to explicitly bind to a UDP port was introduced by VNET+
>>
>> I will extract the code snippet and send it over to you guys.
>>
>> Cheers,
>> Harsha
>>
>> On Jan 18, 2009, at 8:05 AM, Marc Fiuczynski wrote:
>>
>>> Hi Harsha and Sapan,
>>>
>>> On Jan 17, 2009, at 11:17 PM, Harsha V. Madhyastha wrote:
>>>> Great! That worked. Thanks for the tip, Sapan.
>>>
>>> I am very glad this worked.  However, Harsha mentioned that the same 
>>> program worked without this particular additional binding of a UDP 
>>> socket to the specific port back in '06.  Moreover, I am curious 
>>> whether this unmodified program "just works" on a vanilla kernel, but 
>>> not on our kernel. If so, then I think we are not fully compatible 
>>> with the way the old VNET module implemented source port auto-binding 
>>> when users sent UDP packets over a raw socket.
>>>
>>> Harsha, can you validate that your program works without Sapan's 
>>> suggested modification?  And, if that works, please do extract the 
>>> code snippet so we can play with it and improve VNET+ to have the 
>>> proper semantics (if possible).
>>>
>>> Cheers,
>>> Marc
>>>
>>>
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>>
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> 
> 
>