Following the patching of the servers timewand.cc.gatech.edu and teleporter.cc.gatech.edu on March 17 and March 18, 2009, the DHCP service on these servers did not restart. CoC machines who requested an IP address lease or lease renewal after 6:00 PM, March 18, would not have received one. The DHCP service was restarted on both servers and they were again providing DHCP leases at 11:45 AM, Friday, March 20, 2009.