On 11/17/2011 09:47 AM, James Knott wrote:
256 users???? A /56 subnet can support up to a trillion times the entire IPv4 address space. A /64 subnet allows 18.4 quintillion addresses. The IPv6 address space is huge. I've heard of comparisons such as the number of grains of sand on earth or the number of atoms in a ton of carbon. Another was if a 2"square represented the IPv4 address space, then IPv6 would be represented by the area of the solar system. Tell me again why an ISP should limit a customer to only one address.
This may be offtopic, but how about this: Currently, email spam suppression relies heavily upon DNS RBL checks of the last relay's IPv4 address. I believe that IPv6 breaks this method in that a spammer can send out billions of individual spams, each one coming from a different address. Blocking an entire /64 subnet may introduce false-positive issues. I've heard some talk of keeping main-line MTA servers on IPv4 forever because of this. Go figure... Regards, Lew -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org