Use ip not openvpn to create /dev/tap0.
Use ip not openvpn to create /dev/tap0.

Everyone who has a recent version of the ip tool can use it to create
tap0 --- and it's standard on recent Debian, Ubuntu and CentOS.
Not everyone has UML-tools (tunctl) or openvpn installed.  So use ip
instead of openvpn to instantiate the tun devices.

mithro/HDMI2USB-litex-firmware,cr1901/HDMI2USB-litex-firmware,cr1901/HDMI2USB-litex-firmware,cr1901/HDMI2USB-litex-firmware,cr1901/HDMI2USB-litex-firmware,mithro/HDMI2USB-litex-firmware,mithro/HDMI2USB-litex-firmware,mithro/HDMI2USB-litex-firmware