On Thu, 2019-06-27 at 10:20 +0200, Aleksander Morgado wrote: > > > The main issue with this approach is that ModemManager would do a lot > of tasks that were exclusively done by NetworkManager before, like IP > addressing setup or IP routing setup.
Hi, Configuring IP addresses and routes must be done by NetworkManager. NetworkManager has settings like ipv4.route-table, ipv4.route-metric, and ipv4.ignore-auto-routes. ModemManager does not know whta NetworkManager plans to do with these settings (and making that all configuable seems high effort while the wrong approach). NetworkManager would also remove such routes that it is not aware of during `nmcli device reapply`. ModemManager already reports IP configuration back to NetworkManager. It should just continue to do so. This does not mean that ModemManager should not run pppd. It sounds like a good idea to me. But ModemManager should just report the IP addressing back -- at least configurably/optionally when NetworkManager is involved. best, Thomas
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