There is no "LEDE interface" for the Linux interface created by OpenVPN
Username: Cristian Morales Vega
Origin: https://bugs.openwrt.org/index.php?do=details&task_id=1024
Let’s say I want to enable dropbear only in the tun0 interface created by OpenVPN. The dropbear configuration has an “Interface” field where I can make it listen, for example, only on the “wan” or “lan” interfaces. But the tun0 interface has not been created by anything in /etc/config/network and LEDE doesn’t really know about it, so I can’t specify it the dropbear configuration.
Even adding the tun0 interface to a “vpn” network in /etc/config/network using “proto none” fails to do the trick.