On Oct 5, 2009, at 2:10 PM, Brian Johnson wrote:
What would be "wrong" with using a /64 for a customer who only has a local network? Most home users won't understand what a subnet is.
They probably don't -- but some appliance they buy might. Maybe some home "family-oriented" box will put the kids' machines on a separate VLAN, to permit rate-limiting, port- and destination-filtering, time- of-day limits, etc. In the past, I had to do similar things -- no AIM during homework hours, no file-sharing -- to the point that I had four subnets in my house (wireless, teen-net, workVPN, and backbone/ parents). I don't expect the average consumer to set up something like that, but I sure wouldn't be surprised at appliances that did. --Steve Bellovin, http://www.cs.columbia.edu/~smb