0xb7fc2410: ????* Heartbeat Failure 2 (Step 3)
The above line and many, many others came out of the very useful Helix DNA server when I restarted it yesterday. Why? Because once again I'd forgotten than when I reboot my Ubuntu server it doesn't bring up the loop-back device. Hence the command in the title of this post.
VNC, Google AppEngine Java SDK are a couple of other things I use that fail to work properly without 'lo' up. In some ways what is more remarkable is that the Ubuntu distribution itself is so content to work without this widely used (essential?) virtual network device.