On 11/12/24 11:09, James Knott wrote:

On 11/12/24 10:53, Lew Wolfgang wrote:

You don't send an email to an IP address. You send it to an account on a server. Also, with IPv6, a LAN has a gazillion addresses (2^{^64} or 18.4 billion, billion).

Why do you need such a massive subnet? Security through obscurity?
I'd rather have separate independent subnets with a DMZ. I don't want
my light bulbs to ssh in to my desktop.

I've always wondered why IPv6 is /64 by default? Seems like a waste.

I suspect they wanted to avoid running out of addresses in the foreseeable future (before the heat death of the universe 😉 ).

Exactly. Why carry around all those extra host bits if they'll never be used.
24 makes sense to include MAC addresses, maybe round up to 32 in
an abundance of caution. But 64? Wouldn't 4.3 billion host address be
sufficient with /32?

Regards,
Lew