Hi,
> Once I switch the 2.6.5 windows client (with DCO) to UDP mode, we
> still have fast downstream (measured on the client, 644Mbit/s) but
> only 0.76Mbit/s upstream.
Interesting. We haven't seen this before.
> So it's some sort of DCO issue -- but only with UDP. Any ideas how we
> could examine it further?
Anything interesting in server/client logs with verb 4?
Logs from the DCO driver could be helpful.
1) Start log collection by running this command under elevated prompt:
> wpr -start ovpn-dco-win.wprp
You can get ovpn-dco-win.wprp from
https://github.com/OpenVPN/ovpn-dco-win/blob/master/ovpn-dco-win.wprp
2) Reproduce the problem
3) Stop log collection:
> wpr -stop ovpn-dco-win.etl
And share the .etl file with us (feel free to open an issue on GitHub).
Does it reproduce on different client machines?
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