Fix compression param in the spec file

[daviddob]

When attempting to specify lz4-2 OpenVPN would fail to start with unknown compression options, changing to lz4-v2 resolves this.

[dpb587]

Good catch - thanks!

[dpb587]

Out of curiosity, did you run into any bugs or concerns with the default auto behavior?

[daviddob]

I didn't have any issues with it running in my previous configuration, however for security I usually disable it altogether (re: Voracle) and may suggest it become the default as such. Recently I had a use case where speed and throughput were more important in a low risk environment and after a few benchmarks I found that UDP + lz4-v2 + a few extra configs were best for the server's CPU and overall performance.

[dpb587]

I think it makes sense to change the default as well. I'll queue it for more thought and potentially the next major version change - I have some other planned changes queued up for that as well. If you have more thoughts, I made an issue to track it.

Agreed that UDP is going to provide noticeably better throughput in stable network environments.

If you have any authoritative OpenVPN configuration references or recommendations on other default configuration changes, I'm happy to chat more.

Thanks!