4 ms·
This sounds like and A/B problem. You’re asking how to do A but what you really want is B. But you’re asking about A because that’s how you think you’d get B in
by labcomputer 3y ago
This sounds like and A/B problem. You’re asking how to do A but what you really want is B. But you’re asking about A because that’s how you think you’d get B in the ipv4 world.
Your ISP should give your router a /56 prefix via PD, which you can divvy up into 256 networks internally. Alternatively, if you don’t need globally-routable addresses, just pick a ULA prefix and have your router advertise it internally.
- dblitt 3y agoWhat happens if your ISP just gives you a /64?
- ikiris 3y agoWhat happens if the moon is made of cheese? Outside of obscure hypotheticals you make do or switch providers.
- jlokier 3y agoIt's not that obscure. It's common to be given a /64 to a home, or even to small business premises. Some even get a /128. So it's reasonable to wonder how people deal with that problem when needing multiple subnets. Many locations don't have a realistic choice of affordable providers, or none of them provide IPv6 with a shorter prefix anyway.
- GoblinSlayer 3y agoDepends on what you want to do. Maybe use one network or assign static addresses. Here's a post on /120 networks: https://blog.ipspace.net/2011/05/ipv6-neighbor-discovery-exhaustion.html https://blog.ipspace.net/2011/05/ipv6-neighbor-discovery-exh...
- BenjiWiebe 3y agoMy ISP doesn't even give me a /32 v4 or a /128 v6. CGNAT v4 only. I'd love to have to make do with a /64.
- riobard 3y agoMy ISP did exactly that. I bugged their customer support several times over a month and they finally caved and gave me /60 now.
- InfamousRece 3y agoMy ISP gives me /64. It is unusable with consumer routers.
- magicalhippo 3y agoISPs should do a lot of things, but when it comes to IPv6 many don't. Mine gives me a new prefix every time my router boots. Meanwhile I've had my DHCP allocated IPv4 for 3 years now... Given that the IPv6 standard was written by enterprise network people with no thought how it would get deployed to the masses, lots of software is still a PITA to work with if you got an ISP like mine.