On Dec 5, 2011, at 4:58 PM, David Conrad wrote: > On Dec 5, 2011, at 1:13 PM, John C Klensin wrote: >> this is a much stronger argument for a "dear customer, either renumber or upgrade your >> hardware" position > > I'd imagine the vast majority of the customers of ISPs who are facing this issue would react either with anger or non-comprehension if presented with such a position. If you were running such a network, would you risk it? Precisely. This proposition would result in both (1) increased support costs*, and (2) irritated customers that decide to switch ISPs rather than renumber or upgrade. We can't (realistically) expect ISPs to choose this. The sad / funny thing is that result #2 rewards ISPs that use squat space or globally unique blocks... Cheers, -Benson * - e.g. 30-60 min toll-free phone call with a technician, which might actually cost more than the profit margin on some residential broadband services _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf