I opened this mostly as a boilerplate because I think it's something valuable to have. I'm happy to run through tests if the maintainers think this is a valuable change, and I can probably expand a little bit on some of the j2. I don't want to waste time if it's something the maintainers don't agree with at a more fundamental level, I can just do the change in my local vyos with some post boot scripting.

Not sure how to actually link it here, don't think I have that permission.