(Error code 0216eb)
This error originated from one of the following locations within the iPXE source code:
DEBUG=x509
(Please edit this page to include any of your own useful hints and tips for fixing this error.)
Add DEBUG=tls,x509:3,certstore,privkey
to make line for relevant run-time debug info.
If you want to trust multiple root certificates, use one certificate per file and specify all files separated with comma as described in the commit that introduced the feature.