Ah, well thanks for sharing. Different to others. Wonder if it's router config. Hard to say.

Always the challenge with large ISPs is finding official technical answers!

My router log shows that BT issued a /56, and the router uses the first /64 to assign addresses to local systems. The status page shows the /64 assigned to the LAN interface, so I suspect most simple ISP supplied routers only show that part of the allocation.

As an aside, my router allows me to delegate the remaining blocks to downstream routers: building a publicly routable network of LANs if I wished. Definitely a lot more powerful than the single dynamic IPv4 or even a small block of IPv4 addresses.

And no more NAT 😁

In reply to a post by TinyMongomery:

My Smart Hub also gives a /64 IPv6 global unicast prefix / length. The help says

The pool of addresses available for all the devices you connect to your BT Smart Hub.

The prefix will be the start of each address and the length tells you how many addresses are available.

Unless the last sentence is referring to a limit of 64 devices on the hub, in fact whether or not it is intended to, that "help" is a load of baloney.

Edited by pluralist (Tue 13-Aug-24 22:48:18)

It's highly unlikely that the prefix would be dynamic.

In reply to a post by TinyMongomery:

For your third post in 4 years that comes across as rather aggressive and rude. It seems a perfectly good question to me.

https://dictionary.cambridge.org/grammar/british-gra...

In a restricted access forum almost a year ago you wrote:

In reply to a post by TinyMongomery:

Try to be understanding.

The need to constantly correct the grammar and spelling of others is a psychological disorder. We need to support sufferers of this ailment and try to boost their low self esteem. We have a few on this forum, so try to make them feel better about themselves.

It must be horrible to go through life feeling like that.

Aren't you being just as "aggressive and rude" yourself there? You could have made your grammar point, with which I agree, without the first sentence of your reply to speckled500.

You are no more a moderator here than you are in the forum where you posted that. The last sentence in the quote should haunt you.

IPv6 terminology will confuse most consumers. The important message is that they will never run out of local IPv6 addresses no matter how many local systems they have.

/64 refers to the number of bits available for client addresses: 64 bits allows around 18 quintillion unique addresses! Probably enough in a single /64 to assign a unique address to every grain of sand on earth.

A /56 prefix delegation provides 8 bits for local prefixes: that’s 256 local subnets, each with 18 quintillion client addresses.

I know. Why do you think I said the "help" in inverted commas there and here was baloney?

Edit: Similarly about the /64 prefix not being dynamic.

Edited by pluralist (Wed 14-Aug-24 08:44:10)

It would be great if you could try to keep your personal vendettas out of the information forums. It's not helpful to allow arguments from The Park to spill over here.

Thank you for your cooperation in advance.

Post deleted by pluralist

I expect every other poster here agrees with my opinion that you could have made your point about the grammar, (note that I agreed with that), without your unnecessary rudeness and aggression to the poster. Now repeated against me.