New in Yocto Project 1.7

Network connectivity

Ifupdown

ifup script does not work well with the kernel 3.17. It fails to acquire an IP through udhcpc.

The following works well however:

ifconfig mlan0 up
wpa_supplicant -i mlan0 -c /etc/wpa_supplicant.conf&
udhcpc -R -b -p /var/run/udhcpc.mlan0.pid -i mlan0

Network Management

systemd-networkd service manages network connections, including Ethernet and wireless. Ethernet, if cable is attached, will come up and acquire an IP address without any user-side configuration.

For wireless connectivity, we still need wpa-supplicant to manage roaming and connecting to networks. After specifying wireless network in /etc/wpa_supplicant/wpa_supplicant-{mlan0|wlan0}.conf, simply enable the service like so:

$ systemctl enable wpa_supplicant@{mlan0|wlan0}