Telling Ubuntu Network Manager to leave an interface alone

I wanted to assign a static IP address to a USB-to-Ethernet interface.  Edit /etc/network/interfaces… easy, right?  Then the NetworkManager starts to periodically get involved and make conflicting changes.  I’m not yet ready to embrace its GUIness, so I wanted to just disabled it.  

Turns out it’s easy if you know where to look:

sudo vi /etc/NetworkManager/NetworkManager.conf
# Add a line like this (comma-separated list of
# Ethernet MAC addresses of interfaces to ignore):

# Then restart NetworkManager
sudo service network-manager restart

It should then leave your interface(s) in peace.


2010 in review

Crunchy numbers

This blog was viewed about 13,000 times in 2010.

In 2010, there were 32 new posts, growing the total archive of this blog to 356 posts.

The busiest day of the year was June 21st with 78 views. The most popular post that day was iptables / NAT in Xen.

Where did they come from?

The top referring sites in 2010 were,,,, and

Some visitors came searching, mostly for rendezvous proxy, erickson gizmo, linux fake com port, shadow $6$, and xen iptables nat.

Attractions in 2010

These are the posts and pages that got the most views in 2010.


iptables / NAT in Xen August 2008


Compiling a kernel for a Beagle Board November 2008


Warning: post-commit hook failed (exit code 255) with no output. January 2010
1 comment


Virtualization Stuff April 2006


$1$ vs $6$ in /etc/shadow July 2009

Solar battery chargers

I’m going on a long bike trip (multiple days + camping in between) and I want to charge my GPS device and cell phone using some kind of solar device. I started looking around and found quite a few:

  • Solio has a classic, hybrid, and magnesium edition.
  • Soldius only seems to offer the Soldius 1, but it does not include an integrated battery.
  • Megasol supposedly makes the Solar Energy Pocket Power (SEPP) but their website doesn’t support English.
  • 21st Century Goods has an entire category for solar products.