I recently set up a IPv6 tunnel with Hurricane Electric’s free tunnel broker. Once your tunnel is created, HE provides instructions for setting the tunnel up on your system. Easy peasy. I decided that I wanted to setup a tunnel on my laptop. That’s a little tougher since my laptop will be getting a dynamic IP from the various wireless networks I connect to. Even more fun, since most wifi networks I connect to in hotels and airports, etc.

I spent a couple of days a while back trying to figure out why I was seeing bizarre bridge and network errors in my KVM host’s syslog and a VM that only two of three NICs worked at a time. Turns out that there is a very simple fix for both problems. First, let’s start with the KVM host network configuration. Here’s the basic config for a host with two NICs.

One of my criteria for choosing a virtualization platform is that it had to run Windows and Linux guests. Linux, of course, works out of the box on most VM hosts. Windows is a whole other story. The good news is that Windows Server 2003 and Server 2008 work just fine on KVM. There are, however, a few weird things that I’ve noticed so I thought I’d share some of them with you today.

We’re in the process of trying to virtualize our data center at work. I was given the task of testing and evaluating the various VM technologies. I have to say that I am not impressed. VMWare ESX Let’s start with the big player in the VM world, VMWare ESX. The Banner team uses ESX for a few of their servers. ESX stood head and shoulders over everything else that I looked at.