Freebox openvpn implementation use "subnet" topology

coooly

Hi,

I'm not sure if I should post here or on directly on the bug tracker.
Free french ISP recently added to their set top box an open vpn server.

Configuration isn't really on user side but you can :

Manage user and their password
Enable routed and/or bridge mode
Choose port, encryption and fragmenting or not
Download each user configuration as a ovpn file

That's it, you can't modify any other setting and see what's the server configuration.

So trying to connect with a router configuration on iPhone 5s (and probably other iOS devices) leads to the following error :

2014-05-10 10:51:33 TUN Error: tun_builder_error: ifconfig addresses are not in the same /30 subnet (topology net30)
2014-05-10 10:51:33 EVENT: TUN_SETUP_FAILED tun_builder_error: ifconfig addresses are not in the same /30 subnet (topology net30) [ERR]
2014-05-10 10:51:33 EVENT: DISCONNECTED

Freebox Dev says that's because OpenVPN connect doesn't support subnet topology. (http://dev.freebox.fr/bugs/task/14662#comment61428)

Which is where my small knowledge of configuring those things stops. 🙂

So does the client doesn't support it ? Is it planned ?

If needed:
Connection log : https://docs.google.com/document/d/1u7pqX0j3hBUrCf85F_n6DkZMzZ9u5o_X9UhjIW3bdQo/pub
ovpn client file : https://docs.google.com/document/d/1CE1iydvWc78zBPA7Rw99NK8EZTCgXk6JYVUPMxjmaOg/pub

Thanks !

PsykotropyK

I am reviving an old post but I was looking for the same issue and found the answer, so posting here in case it helps someone.

In order to set up the "subnet" topology you can edit the configuration file that the server provides in order to specify the topology.

Just add : 'topology subnet' in it