aka what i did to get from nothing to done.
note: these are designed to be primarily a re-install guide for myself (writing things down helps me memorize the knowledge), as such don't take any of this on blind faith - some areas are well tested and the docs are very robust, some items, less so). YMMV
this gist is part of this series
This assumes you are running Proxmox 8.2 and that the line source /etc/network/interfaces.d/* is at the end of the interfaces file (this is automatically added to both new and upgraded installations of Proxmox 8.2).
This changes the previous file design thanks to @NRGNet for the suggestions to move thunderbolt settings to a file in /etc/network/interfaces.d it makes the system much more reliable in general, more maintainable esp for folks using IPv4 on the private cluster network (i still recommend the use of the IPv6 FC00 network you will see in these docs)