[Feature] get remote IP

[celevra]

Use case

it would be great to get the real IP (not the tailscale IP) of a node

Description

the ip should be listet in the cli and in the api

Contribution

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

How can it be implemented?

No response

[kradalby]

This is a bit relative, not saying we can't but we have to decide which or all.

There will be the IP that is connected to headscale, which we likely can get from the go http server.

Then there is all the discovered endpoints that the tailscale client discovers as part of magicsock. This list might include old endpoints as it is quite opportunistic.

It is a bit non obvious to which ones are useful.

What is the use case for consuming them?

[celevra]

for us the connected ip from go http server is what we are looking for.
it is not our main use case for tailscale but as the information exists we want to set dyndns names for devices that don't support dyndns but support tailscale