Up until yesterday I had the following configuration: Centurylink ZyXel DSL Modem with Wireless disabled connected to a 3rd Generation Airport Extreme (7.6.3). The network was wirelessly extended to 3 Airport Express (2 Second Gen, 1 First Gen). Everything ran smoothly for months until yesterday when: -Internet frequently dropped from the 3 Macs I have -My iPad and iPhones could not connect at all to the network -My Linux PC could not connect to the Internet -Windows Laptop Internet worked perfectly fine! The Airport Extreme did NOT have the blinking amber light but was green, as well as the 3 Airport express. I thought it was the Modem so I disconnected it and rebooted and thats when all hell broke loose. The Airport Extreme started blinking Amber and I was getting an error message that there was no Internet and no DNS, but get this, the internet was still working on my Macs (but nothing else). After trying to work through a number of fixes thinking it was the modem, I decided to disconnect the Extreme entirely (rendering the Expresses useless) and turned on the Modem's wireless and lo and behold everything was connecting to the network. Today I tried a number of configurations and none worked, that includes resetting the AEXP and AEXT. Unfortunately I need to get the extended network back as the signal is not that great. Clearly it's an issue between the modem and the AEXT, but can't figure it out. Any help would be greatly appreciated.