> From: Mark Andrews <marka@xxxxxxx> > The CGN boxes are new. The customer boxes which are being allocated the > addresses are old. Lots of these boxes will not work with a 240/4 > address. Here's a question, though: would a mix of a smaller block of 'classic' IPv4 space, _along with_ a big chunk of 240/4, be of any use? I ask because I gather there are a lot of situations where e.g. a cable modem has an ISP-local address on its ISP-facing side, and a global IP address (which the customer gets) on the customer side. (I see this in checking out my path to the Internet from my house - I see some 10.xx addresses on the other side of the cable modem.) Could a block of 240/ space be used for things like that? Sure, the 240/ space wouldn't be useful as a source of addresses for _customer-owned_ equipment - but could it be useful elsewhere inside an ISP's network? (And perhaps also as a source of addresses for CPE equipment which _will_ tolerate being given a 240/ space address, although I concede that may be very few boxes, at least at first.) Noel _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf