[systemd-devel] Will *.network replace resolv.conf? What about "Options single-request"?

[Tom Gundersen]

On Mon, May 4, 2015 at 2:57 PM, Christian Brunotte <cb at lathspell.de> wrote:
> systemd.network(5) with Options like "DNS=" and "Domains=" looks like
> /etc/resolv.conf will soon be superfluous.

In many setups, yes, but we will not aim at bug-for-bug compatibility
or anything like that. We are open to adding features that make sense
though.

> If that's the plan, I wonder what happens to "options single-request"
> which I had to use on all IPv6 enabled devices. Is "ResolveOptions" just
> missing in Systemd or considered so "special" that will stay in libc's
> resolv.conf?
>
> (quoting from the man page: "By default, glibc performs IPv4 and IPv6
> lookups in parallel since version 2.9. Some appliance DNS servers cannot
> handle queries properly and make the requests time out.")

Hm, this really does not sound like something that should be
configurable. Are you really seeing these bugs in the wild? And if so,
how do other OSs deal with this? I mean, having to add quirks to every
client does not sound very viable... Surely DNS is something that
should 'just work'. I feel like I'm missing some part of the picture
here.

Cheers,

Tom