LinuxQuestions.org - Ubuntu 12.04 box mysteriously switches from static ether config to dhcp

Hello LQers,

I have a computer in my office running Ubuntu 12.04 server. I have configured the only network interface to use a static ip through /etc/network/interfaces.

After a reboot, or a '/etc/init.d/networking restart', all is hunky dory and my server shows up at 10.1.0.11 (the address provided in interfaces). However, within 24 hours, I will find my proxy is broken (it is running squid and dnsmasq), I can't ssh to it, and the reason is because it has acquired a dhcp lease from the router and has a different address (in the range 10.1.0.100-254).

It is an Intel D525MW board. I have installed nothing at this point except git, dnsmasq, cups, and squid. It is a fanless board, and right now its in a case with no fans :D However, this change has happened a few times, and I somehow doubt it is heat.

Here is my /etc/network/interfaces:

Code:

# This file describes the network interfaces available on your system

# and how to activate them. For more information, see interfaces(5).



# The loopback network interface

auto lo

iface lo inet loopback



# The primary network interface

auto eth0

iface eth0 inet static

  address 10.1.0.11

  netmask 255.255.255.0

  network 10.1.0.0

  gateway 10.1.0.1

  broadcast 10.1.0.255

What are the likely culprits? Is it a bug?