Creating tap device fails somehow

[Juhani Miettunen]

I am trying to get OpenVPN working in tap - bridge mode in an Iocage jail.

Pretty much like described here: https://www.truenas.com/community/resources/openvpn-in-tap-bridge-mode-in-iocage-jail.85/

However, creating the tap device fails. When the server is rebooted, 256 tap devices are created, tap0 - tap255. They do not get any connection, though. When the jail is restarted, tap devices are not created at all.

This is what happens:

[jussi@OpenVPN ~]$ sudo ifconfig tap0 create
ifconfig: interface tap0 already exists
[jussi@OpenVPN ~]$ sudo ifconfig tap0 up
ifconfig: interface tap0 does not exist

Any advice how to go forward?

Cheers, Jussi