[Dnsmasq-discuss] Regression in 2.90 when addn-hosts has an IPv4 but not an IPv6 address

[Casey Tucker]

Hi Sven,

Yes, I tried adding ::1 localhost to hosts.dnsmasq, and it enables the
dig command to succeed. I also tried adding host records pointing to
::1 for each current record that points to 127.0.0.1 in this file.

For the purposes of this discussion I need to assume that this isn't a
complete solution since the problem space extends beyond getting the
dig command to exit with code zero, since our tests fail during the
configuration phase with these changes applied. As far certain
components of our system outside of my immediate purview are
concerned, there's a difference between "NODATA-IPv6 / NOERROR /
NXDOMAIN" with "ANSWER: 0", versus "AAAA record found" with "ANSWER:
1", versus "AAAA record not found, REFUSED".

Cheers,
-Casey

On Sat, Aug 31, 2024 at 10:24 AM Sven Geuer <sge at debian.org> wrote:
>
> Hi Casey,
>
> On Fri, 2024-08-30 at 13:42 -0700, Casey Tucker via Dnsmasq-discuss
> wrote:
> > I don't know whether the way it worked before was intended or an
> > emergent property of previously undefined behavior, but since we need
> > it to do as it did before, we now need to patch and compile dnsmasq
> > with a revert commit instead of directly consuming upstream Ubuntu
>
> Did you try to alter the hosts.dnsmasq file like this?
>
>    127.0.0.1 localhost
>    ::1     localhost ip6-localhost ip6-loopback
>    fe00::0 ip6-localnet
>    ff00::0 ip6-mcastprefix
>    ff02::1 ip6-allnodes
>    ff02::2 ip6-allrouters
>
> Note the repeated 'localhost' with ::1.
>
> Cheers,
> Sven
>
> --
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