>> Also, I think it would be helpful to know how commonly twice-NAT is >> deployed, but I don't have any data there. > >I believe (at least) twice-NAT is fairly common. I have a NATting router >between by cable access modem and my home's local area network, and my >cable access provider has a NATting router between the cable access >network and the public internet. What cable provider is this, so that we can avoid them? /========================================================\ |John Stracke |Principal Engineer | |jstracke@incentivesystems.com |Incentive Systems, Inc.| |http://www.incentivesystems.com |My opinions are my own.| |========================================================| |See what bilateral symmetry can do for YOU! | \========================================================/