Openvpn -> Airvpn possible?

[Ninjakeks 0]

Hi guys,

I have to use another openvpn tunnel to be able to connect to the internet first, but would like to able to also use airvpn.
I tried just using eddie on top of openvpn connect, but that just leads to no connection being made.
Is there some way to set up a multihop from a .ovpn file to airvpn servers?

Thanks!

[OpenSourcerer 1441]

It might be possible on PC with multiple tunnels/TAP adapters, but definitely not on Android, and most probably also not on iOS. OpenVPN Connect sounds like something for mobile, though; since you omitted that detail it's therefore difficult to tell yes or no.

[Ninjakeks 0]

I'm using windows, openvpn connect is just a simple  program to get a connection via a .ovpn file

[OpenSourcerer 1441]

Can you link to where you downloaded this, please?

On Windows something like this could work:

1. Install a second TAP adapter. There must be a .bat or .exe file in the program folder called addtap or something. Execute it.
2. Determine the exact names/IDs of both TAP interfaces. You can use the command openvpn --show-adapters for this or look on the network adapter overview in Windows.
3. In the config file for OpenVPN Connect, add the directive dev-node {ID} or dev-node "interface name" of one of the adapters. Ensure you don't forget the {} in case of the ID and the "" in case of the name.
4. In Eddie > Preferences > OVPN directives, enter dev-node {ID} or dev-node "interface name" of the other adapter. Same as above with {} and "".

Now here is the tricky and more technical part. Depending on the settings of the OpenVPN connection you connect to the internet with the server might push a redirect-gateway def1 directive. This would conflict with AirVPN as the same directive is pushed here, leaving your routing table having two different destinations for the subnets 0.0.0.0/1 and 128.0.0.0/1, the only difference I hope being the metric. I think it's not a problem if the first connection replaces the default route instead (i.e., no redirect-gateway def1). You should look into the logs from the first connection, the PUSH_REPLY line is important here.