[dns-operations] Link-local IP addresses for a resolver?

[Florian Weimer]

* Stephane Bortzmeyer:

> Informal survey: do you know an ISP (preferably a big one with a lot
> of various clients) which advertises a DNS resolver with an IPv6
> link-local address?
>
> In France, Orange is doing that (with RA announces) and it seems to me
> a bit risky (since some clients may forget to keep track of the scope,
> the network interface where the advertisment was received). Are there
> other ISP doing it?

We added scope ID support to /etc/resolv.conf in upstream glibc a
couple of years ago, in 2008.  I can easily see that others may not
have done this, so I agree that there could be problems.