Hi, On Fri, May 16, 2003 at 12:05:23PM +0300, Hank Nussbacher wrote:
Is there such a requirement for IPv4 prefixes? If yes (and I would hope so, otherwise why would anyone want RFC1918 addresses when one can get "real" IPs), then I think the same should apply for IPv6 prefixes.
For IPv4, it's not a requirement. There are certain cases where uniqueness of IP addresses is a MUST (think "VPN connections in large enterprises" - RFC space quite often just leads to collisions and double NAT and more problems), but routeability in the network out there is really not needed, sometimes explicitely not wanted. For IPv4 *PA* space, it's kind of implicit, as the whole purpose of that is to facilitate internet access for an ISP and his customers. Nevertheless the same rule applies: sufficient reason to get address space is "uniquely number machines", not "make them visible outside" (BTDT). Gert Doering -- NetMaster -- Total number of prefixes smaller than registry allocations: 54495 (54267) SpaceNet AG Mail: netmaster@Space.Net Joseph-Dollinger-Bogen 14 Tel : +49-89-32356-0 80807 Muenchen Fax : +49-89-32356-299