This is because unlike a TUN/TAP interface, OpenVPN cannot programmatically set the IP address and netmask of a bridge interface. The OpenVPN config should specify the TAP interface component of the bridge interface in its dev directive, not the name of the bridge interface itself.

SOLVED - Openvpn tun interface issues in iocage Oct 21, 2018 Ubuntu Manpage: tunctl — create and manage persistent TUN Provided by: uml-utilities_20070815-1.3ubuntu1_amd64 NAME tunctl — create and manage persistent TUN/TAP interfaces SYNOPSIS tunctl [-f tun-clone-device] [-u owner] [-t device-name] tunctl [-f tun-clone-device] -d device-name DESCRIPTION This manual page documents briefly the tunctl command. This manual page was written for the Debian GNU/Linux distribution because the original program does #878 (Route: Waiting for TUN/TAP interface to come up My user is getting the dreaded "Waiting for TUN/TAP interface to come up" message. What can he do? Fri Apr 28 08:34:53 2017 OpenVPN 2.4.1 x86_64-w64-mingw32 [SSL (OpenSSL)] [LZO] [LZ4] [PKCS11] [AEAD] built on Mar 22 2017 Fri Apr 28 08:34:53 2017 Windows version 6.1 (Windows 7) 64bit Fri Apr 28 08:34:53 2017 library versions: OpenSSL 1.0.2k 26 Jan 2017, LZO 2.09 Enter Management Password

Aug 03, 2018 · On jail restart a single tun interface named tun256, this tun name increments on each subsequent restart. On host restart the manually created tun0 interface on host is removed. This seems irregular, I believe these issues are linked somehow, but my knowledge of network interfaces is limited. Host Restart - Jail ifconfig (end section):

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Universal TUN/TAP driver - FAQ

Using tuntap under Windows - The tun-tap driver is extremely useful for implementing IP tunnels under both Linux and Windows. While the tun-tap driver is a quite popular part of modern Linux and is well documented, its open-source Windows counterpart (developed by Damion K. Wilson and James Yonan) What is TUN/TAP? How to enable it in OpenVZ? - Interserver