A bit confusing I agree. Just a little bit research.

Just hang a poop knife. Problem solved.

IMO nothing. As long as it can detect network I can install whatever tools I need.

Spent 10k on a 2014 Subaru Outback with 120k miles, headgasket leak. First and only owner. Whats even worse is brake error light after spending that much. Carmaxed that junk. I will never ever buy a Subaru. Replaced it with a Honda.

Agree with this. Any Dell Latitude can easily be as good as any Lenovo in terms of Linux support. Our company has moved away from Lenovo and only go with Dell's.

IOS has DNS profiles.

I recommend getting the new server as a whole box, install everything and configure as needed. When everything works as you require, switch feeds. Higher cost but minimal downtime, low risk.

Insurance.