How do I setup a Guest Network on an Airport Extreme Base Station (AEBS) that's the secondary router on a home LAN? I've got Verizon FIOS into the home. The verizon modem / router is in the basement (its wifi is off). It's output goes to an 8-port switch / router which feeds the house's LAN. The AEBS is connected to one of the ethernet outputs of the LAN, and provides home wifi. Normally, I have its Network->Router Mode set to Off (Bridge Mode). I turned on Guest Mode (for some guests), and it doesn't work. No one can connect. Apple says to set Router Mode to DHCP and NAT. But doing that creates errors that my router is in Double NAT mode. The Guest Networks seems to work erratically. http://support.apple.com/kb/HT3477?viewlocale=en_US&locale=en_US I'm lost. Can I setup Guest Network on my AEBS, if it's not the fundamental router in the house?