Hi Tony,
Your enclosed feature comparison list is a fine list. However, the sooner the residential gateway feature set is expanded to cover support of tunneling IPv6 running on top IPv4 as a bearer, the faster you will see IPv6 deployed. Why build in a dependancy on the carriers moving to IPv6 when you don't have to.
Here is the SAT test question related to IPv6 transition:
Q: IPv6 is to IPv4 as
a) IPv4 to X.25
b) IPv4 to ISDN
c) IPv4 to ATM
d) all of the above
regards, peterf
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