ModemManager + systemd-networkd?

Aleksander Morgado aleksander at
Sun Aug 29 13:38:17 UTC 2021

Hey Bruce,

> What is the state of things with respect to interoperability between
> ModemManager and systemd-networkd? My project involves an unmanaged
> device with a web interface to manage a few simple settings, and I'm
> trying to add mobile Internet access to it. We've been successfully
> using systemd-networkd for regular Ethernet and Wi-Fi (with iwd), but
> there doesn't seem to be any glue for systemd-networkd to assign address
> and DNS information that ModemManager obtains from the connection. Is
> this just an impossibility?

I don't think there is any kind of integration right now with
systemd-networkd. The main integration is done with NetworkManager, as
the connections brought up by ModemManager require either DHCP, or
static IP settings, or launching pppd over a serial port.


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