For those who don't recognise the name (presumably many people), Citylink are a disruptive high-speed metro transport provider in Wellington, New Zealand. They run the most elaborate and scary layer-2 switched ethernet network I've ever heard of, and the other week they ran into some problems which caused a prolonged outage.
Here's their writeup: http://news.clnz.net/2007/10/19#Loopback-Saturday-Discussion Why don't I have any suppliers like this? Joe
