MAC addresses
Digi programs one MAC address for the Wi-Fi interface during manufacturing of the SOM.
This MAC address is stored in the Wi-Fi chip OTP bits, and read from there at the initialization process.
A copy of this MAC address is saved in U-Boot environment variable wlanaddr.
This is the MAC address used for the wlan0 interface.
| The MAC address and serial number of the SOM are encoded in the data matrix on the SOM label. |
IP settings
Digi Embedded Yocto defines configuration macros to set some of the most commonly used network interface settings.
See Customize the root file system.
By default, wlan0 is configured to obtain a DHCP address.
Wireless mode
By default, Digi Embedded Yocto configures the Wi-Fi interface in client infrastructure mode (also known as station) but it is also preconfigured to enable concurrent modes. When using concurrent mode, the interface is shared between all functionalities so overall performance is affected.
Maximum performance is achieved on the physical wlan0 when the Wi-Fi interface is not shared between multiple functionalities.
Digi recommends you always use the physical wlan0 interface and only configure virtual interfaces when using concurrent modes.
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NetworkManager
NetworkManager is a daemon that simplifies the configuration and use of network interfaces.
It includes a command line tool, nmcli, which you can use to interact with the NetworkManager daemon.
You can also configure additional network interface settings by editing /etc/NetworkManager/system-connections/nm.<interface>.
