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GRE Tunnel?

Discussion in 'Asuswrt-Merlin' started by Stephen Becker, Jan 13, 2018.

  1. Stephen Becker

    Stephen Becker Occasional Visitor

    Joined:
    Apr 13, 2016
    Messages:
    21
    Has anyone found a way to create a gre (or gre-like) tunnel on an Asus-Merlin router? Using the ip tunnel command fails, it looks like that kernel mod is not included.

    My goal is to enable site-to-site routing, so that every device at every location can communicate with each other. I have already installed bird4 via Entware to enable OSPF, I have that working, just can't seem to create routeable interfaces between the routers.

    I tried using OpenVPN, and can't seem to get it working (it works as designed, I just can't make it work for my purposes). I disabled NAT on the client side, verified that OSPF created the needed routes, made sure iptables shows bi-directional access. But I can't seem to route across OpenVPN tunnels, there seems to be something there that is enforcing the traditional VPN client-server concept.

    NOTE: this forum does not allow you to search gre because it is too short, and searching tunnel returned too many results about basic VPN conversation.
     
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  3. Stephen Becker

    Stephen Becker Occasional Visitor

    Joined:
    Apr 13, 2016
    Messages:
    21
    It looks like the vtun package does what I needed it to. Had to add a command to the firewall-start script to allow the server to listen for the connection, but it seems to work now. I had some stability problems which I have not tracked down yet. It seems like the built-in VPN has some strange dependency issues with this package. In some cases the vtund would not start unless I have started the OpenVPN service at least once since the last reboot.
     
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