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Wait what? then how does my phone get a IPV6 address?

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As an android user who runs an IPv6 LAN I'm also asking the same question. SLAAC? But my router runs stateful DHCPv6 and shows phone asking for and being allocated an IPv6 address...

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i run an ipv6 lan

Why?

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If you run OpenWRT and your ISP assigns you a prefix (mine does) then you kinda end up running one by default. After that it's just a bit of reading to figure out what DHCPv6 settings are going to produce the best result.

But as other people have said, it used to be a good way around CGNAT, though I've since managed to persuade my ISP to give me a static IPV4 despite being on their residential service tier. I think they've CGNATed so heavily that it's freed up a ton of IPv4 addresses and now they're less picky about giving them out to those who really want (need) them.

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Tf you can just ask nicely for a static assignment?

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If you ask super nicely they'll give you a /29

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What isp is this?

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i imagine mostly autism, but it could be beneficial for improving p2p connectivity or for enabling remote access from behind cgnat

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IPv6 LAN

Keep yourself safe immediately

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>not running ipv6-only lan with dns64/nat64

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slaac

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so this is mostly network admin sneed that they can't control this behaviour?

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pretty much. Any basic home isp router is going to set up slaac for ipv6 addressing, dhcpv6 is going to be more of a thing on corporate networks and more complicated (probably needlessly complicated) setups. One downside of slaac is you can't use it for a subnet smaller than /64 -- which should never be necessary anyways, except that some shitty isps will not give home users any more than one /64 of ip space.

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Glad we have IPv6 neurodivergents on here. I’d like to get the IPv6 Sage shirt at some point.

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A /64 is still a LOT of a addresses...

My ISP hands out a /56, which seems fairly standard.

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its not that it isn't enough addresses, it's that you can't make subnets out of it without breaking slaac. A /56 doesn't have this problem (you could make 256 /64 subnets)

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I have an android phone and my router runs stateful DHCPv6 only and it's both asking for and getting a prefix address, not SLAAC. (I know it's not SLAAC as it shows up in the router DHCP admin panel.)

Xiaomi device (Mi A2 Lite)

So...

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no idea. could dhcpv6 have been added by the vendor?

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