Re: [irtf-discuss] Why do we need to go with 128 bits address space ?

[Keith Moore <moore@xxxxxxxxxxxxxxxxxxxx>]

On 8/16/19 10:44 PM, Masataka Ohta wrote:

32 bit IPv4 address is enough to represent hierarchical topology of
the Internet today.

well, sure, if you you presume that "the Internet today" is limited to only the nodes with publicly reachable addresses.

It merely means that, even with not very optimized address allocation
of the Internet today, treating several bits of port number as address
is enough to represent full hierarchy.

which is of course, completely ridiculous.   and therefore meaningless.

What's completely ridiculous and meaningless is to assert
hierarchy needs 128bit or 64bit address.

ah, thanks for explaining your position.

Keith