OPNsense does not add l2tp device via Webui if configured

[jboettge]

If you try to add a l2tp device via Interfaces -> Point to Point -> Devices -> Add, you can insert all the details needed and save it, the web ui shows a interface l2tp0 which should be correct.
After assigning the newly created interface and activating it, the logfile shows

opnsense: /interfaces.php: The command `/sbin/ifconfig -m 'l2tp0'' failed to execute ifconfig: interface l2tp0 does not exist

furthermore, if you open the advanced settings it opens an empty mask to create a new l2tp interface.

Versions | OPNsense 18.7.2-amd64FreeBSD 11.1-RELEASE-p13

[jboettge]

[fichtner]

There's an issue here indeed, but I'm unable to locate it at first glance.

[miminno]

Same issue with adding PPTP interface.

[fichtner]

reclassified as cleanup since there wasn't an issue with operation, for details see 7fda167