Interfaces: Devices: Point to Point section needs a mention in the devices manual page

[fichtner]

Important notices

Before you add a new report, we ask you kindly to acknowledge the following:

• I have read the contributing guide lines at https://github.com/opnsense/docs/blob/master/CONTRIBUTING.md
• I have searched the existing issues and I am convinced that mine is new.

Is your feature request related to a problem? Please describe.

The removal of 9ed75e3 showed that we don't actually have a page describing the PPP settings. The access of PPP settings through the interfaces settings has been removed to make the code more maintainable.

Describe the solution you like

• Add a Point to Point section with the most useful settings removed in 9ed75e3 plus some more as these could be important to users.
• Also add a tutorial for PPPoE setup from scratch via the GUI (not the wizard) which is something we are definitely missing as well.

Describe alternatives you considered

N/A

Additional context

#643

[wrobelda]

I just run into this issue, somewhat. The docs mention PPP/Wireless log access in several places, but this is nowhere to be found in the UI anymore. See e.g.:
https://docs.opnsense.org/manual/how-tos/cellular.html#step-4-troubleshooting ("Interfaces ‣ Point-to-Point ‣ Log File")
https://docs.opnsense.org/manual/logging_interfaces.html

More importantly, are the PPP/Wireless log files actually available anywhere at all?

[fichtner]

I think I already deleted one, but not the other. Logging of connectivity moved to where it belongs—the general log along with all other connectivity daemons and reconfiguration logging.