Comment 0 for bug 1551747

it seems that ubuntu-fan is causing issues with network configuration.

On 16.04 daily image:

root@localhost:~# snappy list
Name Date Version Developer
canonical-pi2 2016-02-02 3.0 canonical
canonical-pi2-linux 2016-02-03 4.3.0-1006-3 canonical
ubuntu-core 2016-02-22 16.04.0-10.armhf canonical

I see this when I'm activating a wifi card on a raspberry pi 2.

root@localhost:~# ifdown wlan0
ifdown: interface wlan0 not configured
root@localhost:~# ifup wlan0
Internet Systems Consortium DHCP Client 4.3.3
Copyright 2004-2015 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/wlan0/c4:e9:84:17:31:9b
Sending on LPF/wlan0/c4:e9:84:17:31:9b
Sending on Socket/fallback
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 3 (xid=0x81c0c95e)
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 5 (xid=0x81c0c95e)
DHCPREQUEST of 192.168.0.170 on wlan0 to 255.255.255.255 port 67 (xid=0x5ec9c081)
DHCPOFFER of 192.168.0.170 from 192.168.0.251
DHCPACK of 192.168.0.170 from 192.168.0.251
RTNETLINK answers: File exists
bound to 192.168.0.170 -- renewal in 17145 seconds.
run-parts: /etc/network/if-up.d/ubuntu-fan exited with return code 1
Failed to bring up wlan0.