A /56 is the default delegated subnet size for IPv6, you should break it down further to a bunch of /64s 

I have mine setup using systemd-networkd to automagically do a SendRA 

I should do a short write up on this, but it is really a couple of lines, throw in a couple of UFW lines everything is now IPv6 enabled.

Anyone remember Viagenie/Hexago/Freenet6? :)



On Wed, Jul 2, 2025 at 11:34 AM James Knott via Talk <talk@lists.gtalug.org> wrote:
On 7/2/25 10:30, D. Hugh Redelmeier via Talk wrote:
> A /20 has 16 times as many addresses as a /24.  So I consider it large.
> The truly large are the /8 networks.

I get a /56 from Rogers on IPv6.  That's 2^72 addresses!  However, I
haven't used them all yet!  😉
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