RM> UPC Austria converts IPv4 connections to DS-Lite! RM> Without asking ... and without warning. RM> When you complain and they are in a good mood, they will convert you RM> back ...
It isn't "nice", but I sort of can understand this policy. It is comparable to what manufactturers of consumer electronics did with regard to RF immunity. Nowaday it must be immune up to 3 Volt/meter but before that they figured it was cheaper to individually deal with the very few cases that were affected than to make everything immune.
DS-Lite is cheaper and simpler in the long run than dual stack because they only have to maintain an IPv6 only core network. When they annouce the transition to DS-Lite, the helpdesk will be flooded. When they silently move to DS-Lite, only a small minority of the customers will notice and and an even smaller part of them will complain and want a public IPv4 address.
It is not "nice" but as a bussines plan, I can understand it.
