Comment 15 for bug 1729674

I am not using ipv6.

On Tue, Nov 14, 2017 at 9:10 AM, Mario Limonciello <email address hidden>
wrote:

> @Dave:
>
> I was glancing at r8152 driver and notice that it has some special
> handling for ipv6. Is this issue reproducing only in ipv6 for you?
> https://github.com/torvalds/linux/commit/6128d1bb30748d0ff56a63898d14f3
> 12126e404c
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1729674
>
> Title:
> TB16 dock ethernet corrupts data with hw checksum silently failing
>
> Status in Dell Sputnik:
> Triaged
> Status in linux package in Ubuntu:
> In Progress
>
> Bug description:
> It looks like TCP rx and tx checksum offloading is broken on the TB16
> dock's ethernet adapter. For example downloading a large file such as the
> Ubuntu ISO, and then running an md5sum on it yields the incorrect md5sum.
> This is because
> rx-checksumming: on
> tx-checksumming: on
> and both set to on by default.
>
> Running sudo ethtool -K <TB16 eth device> tx off rx off, allows the
> download to complete correctly. This is very bad since this can cause
> very bad untrustworthy behavior.
>
> This was conducted using an Dell Precision 5520 on Ubuntu 16.04+linux-
> generic-hwe-16.04-edge.
>
> Thank you
>
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