Alain, Unless I misheard, you said yesterday in the Softwires meeting that you thought it whould be difficult to reduce assigned numbers of ports in a completely stateless solution (without per customer state in BR's).
AFAIK, this isn't difficult with the 4rd stateless address mapping. It would only require a slight amendment of the current spec. Thus, a reduction of the number of ports of a particular customer, or of a class of customers, is done by increasing the length of its assigned IPv6 prefix(es). Thus, each bit added to the IPv6-prefix length divides by two the number of ports. Details of the amendment can be discussed in due time. In many typical environments, the fact that each port-set reduction is at least a division by 2 shouldn't be AFAIK a problem . (Address prefixes have always defined addressing spaces whose sizes vary by 2^k factors.) Regards, RD _______________________________________________ Softwires mailing list [email protected] https://www.ietf.org/mailman/listinfo/softwires
