IPv6 window scaling factor always 1 on initial SYN

Bjoern A. Zeeb bzeeb-lists at lists.zabbadoz.net
Fri Apr 10 05:40:08 PDT 2009

On Tue, 7 Apr 2009, sthaug at nethelp.no wrote:

>>> I changed it, and that worked like a dream. Now I get basically the
>>> same throughput with IPv4 and IPv6. There are of course still issues
>>> like lots of IPv6 tunnels that add extra latency - but that's not the
>>> fault of FreeBSD.
>>> Anyway, thanks for your work. Below is a context diff (against 7-STABLE
>>> cvsupped last night). Do we need a PR to get this into FreeBSD?
>> It's in HEAD now as of SVN r190800.
> Excellent news, thank you! And presumably we'll get a MFC after a
> suitable settling time?

If 3 days were suitable;)  It'll be part of 7.2-R as it is in stable/7

Thanks a lot for reporting and testing!


Bjoern A. Zeeb                      The greatest risk is not taking one.

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