[Feature] Ability to change IP address

[aalmenar]

Use case

The use case is for reorder the ips according to my "network planning". Also if you reinstall a server it would be easier to have it have the old ip address for whatever reason you may need. It also should bring feature parity to Tailscale that currently allows to do this

Description

The feature should be as simple as setting a specific IP address to a node.

Contribution

• I can write the design doc for this feature
• I can contribute this feature

How can it be implemented?

I suppose of how i tested it, by updating the database the field of ip of the node, reconnect the client and done, new ip is working. Obviously magicDNS needs update but i still dont know how it works exactly.