icmp_timestamp has not been removed, and in Linux it is still present in the shared icmp code used by both IPv4 and IPv6.

More likely a bug that has never been noticed, because nobody bothered to test it. I note that most icmp documentation doesn't even mention it's existence.

If a kernel bug, most likely a corrupted checksum. But my bet would be code outright missing from the library.

Good luck!

Thanks,

--MM--
The best way to predict the future is to create it. - Alan Kay

We must not tolerate intolerance;

however our response must be carefully measured:

too strong would be hypocritical and risks spiraling out of control;

too weak risks being mistaken for tacit approval.

On Sat, Dec 11, 2021 at 5:20 AM Sebastian Moeller via Rpm <rpm@lists.bufferbloat.net> wrote:

Two notes.
1) Technically it is not OWD that is measured, but "OWD + unknown_offset", but since the goal is to evaluate the delta between the current delay and a history delay aggregate, the unknown offset does not matter too much, and as it turns out quite a lot of the tested reflectors are reasonably well synchronized already (to my utter, utter surprise).
2) It appears that ICMPv6 removed the timestamp option, does anybody here have a link to the discussions that lead to this somewhat unfortunate decision?

Best Regards
Sebastian

> On Dec 11, 2021, at 13:59, Dave Taht via Rpm <rpm@lists.bufferbloat.net> wrote:
>
> Somewhere in this thread the actual working method is buried, but:
>
> https://forum.openwrt.org/t/cake-w-adaptive-bandwidth/108848/944
>
> --
> I tried to build a better future, a few times:
> https://wayforward.archive.org/?site=https%3A%2F%2Fwww.icei.org
>
> Dave Täht CEO, TekLibre, LLC
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