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OpenVPN with IPV6 ULA - Not creating route automatically

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  • F
    fabricioguzzy
    last edited by fabricioguzzy Apr 5, 2023, 10:01 PM Apr 5, 2023, 1:47 PM

    Hello everyone,
    I just got a demand to implement a new Site to Site VPN between 2 corps. (using OpenVPN)
    it happens that the partner's (the other network) IPV6 network range is an ULA (fdcf::)
    When I add the partner's range as "Remote network", it is not creating the ROUTE to that network.
    I also tested using a different IPV6 range (like 2001::) and then it works fine.
    Question: Is that an issue or is that something expected because of RFC 4193 or something else?

    J 1 Reply Last reply Apr 5, 2023, 6:42 PM Reply Quote 0
    • J
      JKnott @fabricioguzzy
      last edited by Apr 5, 2023, 6:42 PM

      @fabricioguzzy

      I'm not sure what you mean by "partner". Are you referring to the VPN address that you connect to? If so, it might be because of the ULA address, as those aren't supposed to be out on the Internet. What happens if you manually add the route?

      PfSense running on Qotom mini PC
      i5 CPU, 4 GB memory, 32 GB SSD & 4 Intel Gb Ethernet ports.
      UniFi AC-Lite access point

      I haven't lost my mind. It's around here...somewhere...

      F 1 Reply Last reply Apr 5, 2023, 10:03 PM Reply Quote 0
      • F
        fabricioguzzy @JKnott
        last edited by Apr 5, 2023, 10:03 PM

        @jknott Hello JK, I have edited the text for better understanding. Anyway...
        I would have to enable the openvpn interface to create manual routes.
        But I am more interested on "why" it creates route for a 2001:: address and not for a fc00:: or fd00:: addresses.

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