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I have a DD-WRT router that needs a static route pointing the remote adress to the local VPN adress, like this:

route add 192.168.1.x (remote private adress) mask 255.255.255.0 gw 10.8.0.2 (VPN server adress). (My own private adress being 192.168.2.x).

The VPN peers are hosted on Ubuntu 12.04 boxes behind the DD-WRT routers. I can ping both VPN and private adresses of the servers themselves, but not the subnets behind them. That route works perfectly when applied locally on Windows, but when I try to put the same route on the DD-WRT router (which is the Windows machines gateway), it doensn't create the route on it's routing table.

Anyone have an idea why?

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  • Where is the VPN connection? On the router on the Windows box or on another device?
    – heavyd
    Commented Oct 17, 2016 at 19:54
  • Is 10.8.0.2 locally connected to the router? If not, how would it get the packets there? Also, did you mean 192.168.x.0?
    – David Schwartz
    Commented Oct 17, 2016 at 20:01
  • Hello and thanks for your answers! The VPN is on the server machines, both peers are Ubuntu 12.04 boxes. Those server are both behind the DD-WRT NAT gateways, so yes, it is locally connected to the router. Yes I meant 192.168.x.0. Will improve my question.
    – resch
    Commented Oct 18, 2016 at 10:11
  • If the VPN connection only exists between those servers the routers won't know anything about the VPN. Did you configure those servers to be able to route the traffic?
    – Seth
    Commented Oct 18, 2016 at 10:56
  • Thans for your answer Seth. Yes, they're configured to route the traffic, ip forwarding enabled and everything. As I said, what I want to do works when I do the route on Windows with command prompt, it's just that DD-WRT refuses to fix the same route on it's routing table. Already rebooted the routers, no luck.
    – resch
    Commented Oct 18, 2016 at 15:31

1 Answer 1

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Coundn't find a solution so I just gave up. Solved my problem with a scheduled task that executes a batch file with the "route add" command on the Windows machines.

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