FIOS doesn't have any influence on whether an O/S will work with it. The GPON gear tracks DHCP requests, storing response. At least that is how it works on Tellabs and I believe Verizon FIOS uses Tellabs gear.
I've been using OpenBSD's dhclient on an enterprise GPON implementation for a couple years. diana Past hissy-fits are not a predictor of future hissy-fits. Nick Holland(06 Dec 2005)