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It's easier to remember the IPs of good DNSes, too. (lemmy.sdf.org)

submitted 5 months ago* (last edited 5 months ago) by [email protected] to c/[email protected]

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Today in our newest take on "older technology is better": why NAT rules!

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[–] [email protected] 1 points 5 months ago* (last edited 5 months ago) (1 children)

My ISP does this right (provides a /56 for routing), but unfortunately both are dynamic and change periodically. Every time I disconnect and reconnect from the internet, I get a different prefix.

I ended up needing to have ULAs for devices where I need to know the IPv6 address on my network (e.g. my internal DNS servers).

[–] [email protected] 1 points 5 months ago (2 children)

Indeed, that's correct ula usage, but shouldn't need nat rewriting. The global prefixes just need to be advertised by RA packets

[–] [email protected] 1 points 5 months ago (1 children)

I use openwrt on my home network which uses dnsmasq for dhcp. It can give a static suffix which just works with the global prefix on the interface and the site local / ula prefix it uses

[–] [email protected] 1 points 5 months ago (1 children)

Note that Android doesn't support DHCPv6, just in case you have Android devices and ever have to debug IPv6 on them.

[–] [email protected] 1 points 5 months ago

Yup indeed. That's why it advertises both dhcp and slaac

[–] [email protected] 1 points 5 months ago* (last edited 5 months ago)

Yeah I'm not using NAT, sorry for the confusion.

My router doesn't support RAs for a ULA range though, so I'm running radvd on my home server.