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I'm excited and scared to try this personally. So essentially the issue in using IPv6 is that you're usually using the whole block to directly assign those addr
by wronglebowski 4y ago
I'm excited and scared to try this personally. So essentially the issue in using IPv6 is that you're usually using the whole block to directly assign those addresses to local devices? Is that the primary benefit in a residential space?
- Bedon292 4y agoThe minimum subnet size in IPv6 is a /64 (18 quintillion IPs), and I think typically IPSs have been doing /56 delegation so you can have 256 of the /64 subnets. It means every device ever gets its own IP, and you never have to NAT anything anymore.
- elcritch 4y agoAssigning /64 subnets confused me for a long time with ipv6. It didn’t make sense. It clicked when I learned about some of the ways devices can get ipv6 ips. Those /64 subnets provide a large enough space for devices to randomly self-assign their own address without a high risk of collisions. https://datatracker.ietf.org/doc/html/rfc4193#section-3.2.1 https://datatracker.ietf.org/doc/html/rfc4193#section-3.2.1 All devices need to know is the prefix to generate their own a unique local address (ULA). This can provide for stable local IPs for a device too. This eliminates the need for dhcp since ipv6 provides a standard udp / icmpv6 based protocol for routers to announce the prefix. Icmpv6 also replaces arp so in all it’s a much more elegant system. It can be much more stable too.