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I am using Windows Subsystem for Linux. When I login to my home server using SSH, I first get the following error

setsockopt IPV6_TCLASS 16: Operation not permitted:

and then everything works as expected:

Welcome to Ubuntu 16.04.2 LTS (GNU/Linux 4.4.0-77-generic x86_64)
etc

From what I can gather, setsockopt is a... thing (it's not a runnable command) used to change socket options, but I have no idea by who or why.

I am mostly interested in what this error is and why it pops up and, since everything still works, less interested in how to fix it (unless it's a big bad scary thing), though that would be nice to know too.

FWIW this is a freshly installed server and I am using keys for SSH. WSL Ubuntu version: 16.04.2 LTS. Windows version: 1703, build number: 15063.296.

protected by Mokubai Sep 3 '17 at 13:35

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