[cups.bugs] [MOD] STR #2709: IPP over HTTPS - documentation needed (e.g. how to install CA cert)

[Andreas K. Huettel]

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[STR New]

At our university all printers are accessible via IPP over HTTPS. The
officially recommended way (1) to configure this is to symlink the ipp
backend as https. 

However, recently I cannot print. Symptoms include that the backend
complains "IPP/1.1 not supported, trying 1.0" and later fails. 
Testing with the gnutls command line client, I see that the server
certificate is not considered valid. I suspect this is the problem. 

After 2 hours google search I cannot come up with a way to add a trusted
CA for the CUPS backend (which would solve this particular problem).
(2)

I think this is missing in the docs (and easy to add for those who
know)...

TIA!

(1)
http://www.tudelft.nl/live/binaries/b3d1caf2-5f01-4e50-93a4-bc3d14e7f8c5/doc/Use%20webprint%20with%20Mac%20OS%20X.pdf

(2) 
System is a newly-installed and up-to-date Gentoo Linux x86.

Link: http://www.cups.org/str.php?L2709
Version: 1.2.12