On: Enabling IPv6 support for IPv4-only apps on Linux

[sgjohnson]

all of the DHCP options, for example.

SLAAC just tells the endpoint device to self-assign an address and to roll with it. For example, there’s no way to pass in DNS servers with SLAAC.

[rnhmjoj → sgjohnson]

The DNS bit it's not true: there's RFC8106 [1] for this and it's widely supported. You can set a list of DNS servers to use (RDNSS) and a domain suffix for resolving unqualified hostnames (DNSSL), exactly as for DHCP.

[1]: https://datatracker.ietf.org/doc/html/rfc8106

[MayeulC → sgjohnson]

Can't you provide DNS servers as part of router advertisement packets ? RFC8106

[sgjohnson → MayeulC]

I stand corrected, but I haven't seen this in practice yet.

[magicalhippo → MayeulC]

This requires client support though, which isn't a given.

[stephen_g → magicalhippo]

I expect basically anything that supports SLAAC would have supported DNS advertisements for at least a few years…

[ArchOversight → magicalhippo]

That is most operating systems and devices these days.