configs/releng: add and enable ModemManager

ModemManager's mmcli is the simplest way to connect with WWAN modems.

Mention mmcli in MOTD.

Implements #110.

1 files changed, 2 insertions, 1 deletions

diff --git a/configs/releng/airootfs/etc/motd b/configs/releng/airootfs/etc/motd
index 417b050..3f82850 100644
--- a/configs/releng/airootfs/etc/motd
+++ b/configs/releng/airootfs/etc/motd
@@ -2,7 +2,8 @@ To install Arch Linux follow the installation guide:
 https://wiki.archlinux.org/index.php/Installation_guide
 
 For Wi-Fi, authenticate to the wireless network using the iwctl utility.
-Ethernet and Wi-Fi connections using DHCP should work automatically.
+For mobile broadband (WWAN) modems, connect with the mmcli utility.
+Ethernet, WLAN and WWAN interfaces using DHCP should work automatically.
 
 After connecting to the internet, the installation guide can be accessed
 via the convenience script Installation_guide.