Default Interface Bringup

Alexander Sack asac at
Tue Dec 29 11:25:49 UTC 2015


not sure if you are on 15.04, but if you are, run snappy config
ubuntu-core and you will get a yaml that has a network/interfaces
section, like:

      - name: eth0
        content: |
          allow-hotplug eth0
          iface eth0 inet dhcp
      ppp: []

Try to change that so it matches what you need to bringup your wifi,
e.g. a WPA iface config would look like:

allow-hotplug wlan0
iface wlan0 inet dhcp
   wpa-ssid YOURSSID
   wpa-psk YOURPSKKEY

Hope that works!

 - Alexander

On Tue, Dec 29, 2015 at 1:33 AM, Manik Taneja <manik at> wrote:
> Guys,
> I was working on the Thin Canyon NUC and noticed that by default we don't
> bring up wlan0 interface. Instead, the only interface brought up is eth0. I
> checked this behavior on the Dragonboard 410c and noticed that we don't
> bring up the wlan0 interface as well. Is this behavior by design? On both
> the boards, I was able to bring up the interfaces by using-
> sudo ifconfig wlan0 up
> however, the command-
> sudo ifup wlan0 fails with ifup: Ignoring unkown interface: wlan0=wlan0
> Can someone please help me understand what's the reason for this? Also, If
> we have the kernel module for wifi available than why don't we enable the
> wlan0 interface by default? I think that's a much cleaner interface for
> someone starting with Snappy.
> /Manik
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