Yesterday, we had some trouble with customers at the airport. They’re moving from one building to another, so I figured someone might have snapped some wires, or something else dead-obvious. Nothing like that, though, when we arrived. After visiting 2 customers, arriving at the third, I found the final hint (the DHCP server kept giving me the -exact- same address, though the airlines’ networks should be seperated). First we figured it was someone who made a mistake, but apparently it had always worked like this.. The company that “manages” the building (and wiring, yay) had put up a seperate, “internal” network, connected each and every other internal network to it, and tried to seperate it by using different IP ranges per airline. Ofcourse, they added a default gateway as well. I actually encountered machines having 3 ips, each in different subnets, each with their own default gateway.. I’ve never seen a bigger mess in my life, network-wise :)
At least this clarified some things, and we were able to “fix” it for some customers. But the greatest thing has yet to come. When finished, one of the employees (the “IT guy”) of the management-thingy asked us if we could help him, since he had some strange issues with weird addresses being assigned by an unknown DHCP server in the network. I wonder why..