Pekka Savola wrote:
With this, the ISP could prevent the user from running ND proxy, so implementations will likely have a knob which would ignore this bit, but still..
Since such an ISP would violate the "assign a /48 by default" recommendation, it might as well go all the way and only assign a /128 to the subscriber.
So why would the ISP use the more cumbersome approach of 1) assiging a /64, and 2) lying by setting the P-bit in its RA?
We can't solve the tussle that some ISPs might want to charge per host, while users might want to pay per "wire" and have lots of hosts. Given that the /128 is an option for the ISP, we can avoid entangling the protocol standards with this tussle, which is the best we can do IMHO.
Erik
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