Configure static network routes

[pintify]

Hi!
I wanted to know if there is a way to configure static routes from Kura. Specifically, I'd like to connect to a subnet reachable through a LAN interface (instead of WAN). I've achieved it through ip r but if I could keep that configuration in Kura it would be easier to maintain in the long term.
Kind regards,

[alexcorvis84]

Not sure if that can be done through Firewall -> IP Forwarding/Masquerading IPv4 (I think it's slightly different what you request...). Hope @mattdibi @marcellorinaldo can assist us 😅

[alexcorvis84]

Mmmmm reviewing the logs, a found an ERROR:

System is Ubuntu 22.04.5, and uses iptables-nft by default.

¿Kura 5.6.0 supports it or just iptables-legacy? ¿that could be the reason of the error?

[mattdibi]

Before moving on @pintify @alexcorvis84 should I treat your use-case as the same? Are you guys working together or did you stumble upon a similar use-case at the same time?

Meanwhile I'll discuss this with the rest of the team.

[alexcorvis84]

Hi @mattdibi, yes, please consider the use-case as the same, as we're working together on the same issue.

For now, we have left the interfaces as “Unmanaged” in Kura and have configured the static routes and IPs through NetworkManager. But this is just a 'temporary workaround' as we would like to take Kura control of the interfaces and being able to setup the static routes if possible.

[mattdibi]

Hello there @pintify @alexcorvis84,

after reviewing your use-case with my teammates we agree that the IP Forwarding feature doesn't work for your use case. The correct way to address this is to leverage static routes which, currently, Kura doesn't support.

To address this we would need to leverage the route-data field exposed by NetworkManager DBus API:

which we populate here (look here for 5.6.X version)

The backend change is fairly trivial (update the code above so that it grabs the parameters from the snapshot and populates the outgoing data structure as per NetworkManager expectations... this is how we currently support VLANs). Updating the WebUI to support the routes would require some more work and API changes.

Supporting static routes is currently not in our roadmap but we're happy to accept contributions.

[pintify]

Thank you @mattdibi and all the team for the dedication. The backend seems indeed easy to face, but the UI may be harder. I think we will wait at least until the release of version 6 to make a more long-lasting effort.

[alexcorvis84]

Thanks @mattdibi and all the team for your time reviewing this case ❤️ and support . As we'll need to review the release of version 6.0 (which looks promising btw!) we'll try to address this contribution then.