Re: checksum offloading

[Camaleón <noelamac@gmail.com>]

El Thu, 08 Apr 2010 09:31:11 -0400, Yuniesky Machado escribió:

>> Según el manual (man ethtool) si ejecutas "ethtool -k eth0" te dirá
>> los parámetros que permite modificar.

> Aqui va el resultado

(...)

Parece que no es un parámetro modificable :-(
 
> El problema que analizando el trafico de la tarjeta con wireshark
> 
> detecte el siguiente problema
> 
> Checksum: 0xc9ee [incorrect, should be 0x05bc (maybe caused by checksum
> offloading?)]Checksum: 0xc9ee [incorrect, should be 0x05bc (maybe caused
> by checksum offloading?)]
> 
> Alguien le ha pasado algo similiar que lo haya solucionado

En el manual del programa hablan de eso, dale un vistazo:

***
7.8. Checksums
https://wireshark.org/docs/wsug_html_chunked/ChAdvChecksums.html#id4926183

(...)

Checksum offloading can be confusing and having a lot of [invalid] 
messages on the screen can be quite annoying. As mentioned above, invalid 
checksums may lead to unreassembled packets, making the analysis of the 
packet data much harder.

You can do two things to avoid this checksum offloading problem:

* Turn off the checksum offloading in the network driver, if this option 
is available.

* Turn off checksum validation of the specific protocol in the Wireshark 
preferences.
***

Me temo que sólo te queda la segunda opción ;-)

Saludos,

-- 
Camaleón