CLEARPATH BOXER User Manual page 12

network:
wifis:
# change wlp2s0 to exactly match your wireless interface
# common values are wlp2s0, wlp3s0, wlan0, etc...
# if you aren't sure, use the `iwconfig` or `ip a` command
wlp2s0:
optional: true
access-points:
# replace "my-ssid" with the SSID of your wireless network
my-ssid:
# put your wireless password here
password: wifi_password_goes_here
# DHCP4 should be enabled for most wireless routers
# alternatively you can use a static IP address.
# e.g, uncomment the following
#addresses: [192.168.1.100/24]
#gateway: 192.168.1.1
#dhcp4: false
dhcp4: true
dhcp4-overrides:
send-hostname: true
sudo netplan apply
ip a
Rev 2.0.0 10 025588-Manual, Boxer