3 ms·

Yeah that’s the thing, if everyone is only using IPv6 you can’t just block an entire /64 block.

• howenterprisey 4y ago
  Ah. What mormegil (and I) left unstated was that ISPs will often map a single user to a single /64, and then keep that mapping relatively stable. So when everyone is using IPv6, many ISPs may continue this behavior, so we'll be able to continue blocking /64s.
  • mormegil 4y ago
    Exactly. I'm definitely not an IPv6 expert, but my (possibly wrong) understanding is that you'll never really get anything smaller than /64 (it's not a temporary thing during IPv6 roll-out). Sure, your assigned IPv6 block might be changing, but AIUI it should be less frequent than in IPv4, not more. (It's one of the proposed advantages of IPv6, isn't it, that everyone could have a stable public address. Also, if you want to have IPv6 working even inside your LAN, you want your public prefix to be stable, I'd say.)
  • Beltalowda 4y ago
    Also, IPv4 is far from perfect too, especially with some countries wide-spread usage of carrier-grade NAT. I had a new IP every day. I usually edit Wikipedia without being logged in, mostly just due to laziness (most edits are just small entirely uncontroversial fixes of syntax, sometimes adding a reference, etc.) and would regularly get IP blocked because one of the who-knows-how-many-people used this IP in the last year engaged in some twattery.