IWD
IWD (iNet Wireless Daemon) is a wireless daemon for Linux that aims to replace WPA supplicant.
Installation
Install the iwd package and enable the dbus and iwd services.
Usage
The command-line client iwctl(1) can be
used to add, remove, and configure network connections. Commands can be
passed as arguments; when run without arguments, it provides an interactive
session. To list available commands, run iwctl help, or run iwctl and
enter help at the interactive prompt.
By default, only the root user and those in the wheel group have
permission to operate iwctl.
Configuration
Configuration options and examples are described below. Consult the relevant manual pages and the upstream documentation for further information.
Daemon configuration
The main configuration file is located in /etc/iwd/main.conf. If it does
not exist, you may create it. It is documented in
iwd.config(5).
Network configuration
Network configuration, including examples, is documented in
iwd.network(5). IWD stores
information on known networks, and reads information on pre-provisioned
networks from network configuration files located in /var/lib/iwd; IWD
monitors the directory for changes. Network configuration filenames consist
of the encoding of the SSID followed by .open, .psk, or .8021x as
determined by the security type.
As an example, a basic configuration file for a WPA2/PSK secured network
would be called <ssid>.psk, and it would contain the plain text password:
[Security] Passphrase=<password>
Troubleshooting
By default, IWD will create and destroy the wireless interfaces
(e.g. wlan0) that it manages. This can interfere with udevd, which may
attempt to rename the interface using its rules for persistent network
interface names. The following messages may be printed to your screen as a
symptom of this interference:
[ 39.441723] udevd[1100]: Error changing net interface name wlan0 to wlp59s0: Device or resource busy
[ 39.442472] udevd[1100]: could not rename interface '3' from 'wlan0' to 'wlp59s0': Device or resource busy
A simple fix is to prevent IWD from manipulating the network interfaces in
this way by adding UseDefaultInterface=true to the [General] section of
/etc/iwd/main.conf.
An alternative approach is to disable the use of persistent network
interface names by udevd. This may be accomplished either by adding
net.ifnames=0 to your kernel cmdline or by
creating a symbolic link to /dev/null at
/etc/udev/rules.d/80-net-name-slot.rules to mask the renaming rule. This
alternative approach will affect the naming of all network devices.