[Freeipa-devel] [PATCH] Set of patches to enable DNS work in replica

[Martin Nagy]

On Wed, 15 Jul 2009 09:39:28 -0400, Rob Crittenden
<rcritten at redhat.com> wrote:

> Martin Nagy wrote:
> > Patches are attached. Now we also provide an option --setup-dns to
> > ipa-replica-install that will set up BIND, but will only create the
> > zone if it didn't exist before. One patch also introduces reverse
> > zone, which we didn't have before.
> > 
> > Martin
> >
> 
> A couple of questions.
> 
> So when installing a replica a bind instance isn't required? In other 
> words, you could have a mixed environment where some IPA servers do
> DNS and others don't?
> 
> Looks like the reverse_host and reverse_subnet code you are adding to 
> bindinstance.py won't work on IPv6.

I took a look at the code in ipa-server-install and it seems that it
doesn't have to work on IPv6. If you look on resolve_host() in there
(and I practically copied almost the same code for
ipa-replica-install), you'll notice that it uses the
socket.gethostbyname() function. This function, according to [1] does
not support IPv6.

We probably should think about reworking the code to support IPv6 and
ideally also test it. But at least for now, I think the code for zones
is good enough, given that we don't support IPv6.

Martin

[1] http://docs.python.org/library/socket.html#socket.gethostbyname