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Comment by immibis

2 days ago

Yes, but realistically the guy who is tracking you tracks the first 64 bits of the address, which identify the network.

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immibis

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fc417fc802  2 days ago

That's merely convention. I've encountered at least one VPS provider handing out /128's.

  • Dylan16807  2 days ago

    While a situation like that is really annoying, I bet it's still generally following the rule of one /64 per network. What you're not getting is control over your IPs on that network.

  • craftkiller  2 days ago

    It is more than convention, the /64 is the minimum allocation to support SLAAC. If you're getting less than a /64 you're not getting full support for IPv6.

    • fc417fc802  2 days ago

      Well you're not getting support for SLAAC but I didn't understand that to be a core requirement to qualify as a functional IPv6 implementation.

      Regardless, my point is that allocations narrower than /64 exist in the wild for better or worse. So do IPv6 NAT implementations for that matter. If you assume either of those things don't exist then you might be in for a surprise.