On 8/Sep/15 21:31, Owen DeLong wrote:
> > If the ISPs equipment supports IPv6 on shared VLANs with DHCP snooping and > other security, you can implement it with a single /64 giving each router a > unique address within that segment, but it’s not really ideal. This was > mainly done in IPv4 to conserve addresses. Separate point to point VLANs are > a cleaner solution and since there are enough addresses in IPv6 to do this, > that is how most providers implement. I prefer using /64s (or at least > assigning /64s) to these VLANs, but there are those who argue for /127, some > equipment is broken and requires a /126, and yet others argue for other > nonsensical prefixes. With Private VLAN's, one could share a single /64 per VLAN without providing Layer 2 reachability between customers on the broadcast domain. However, agree that this is a non-issue for IPv6, so a cleaner method is a lot better. Mark.
