Bind 812 vs 822 and forwarders

[Kevin Darcy]

At various times, I'm sure I tested forwarding -- at least in the "forward
only" mode -- with all of those versions and they all worked.

Could you perhaps elaborate on your testing methodology?


- Kevin

Diego Balgera wrote:

> Hi smart guys,
> I followed Kevin's suggestion and tried to upgrade the dns server which
> should use the forwarder. To summarize:
>
> - with bind 8.1.2 the forwarder feature works
> - with bind 8.2.2P5 the forwarder feature doesn't work
> - with bind 8.2.2P7 the forwarder feature doesn't work
> - with bind 8.2.3 the forwarder feature doesn't work
> - with bind 9.1.0 the forwarder feature works again.
>
> I analyzed the results with protocol analyzer and bind tracings, and in all
> the 8.2.x versions the forwarding was ignored, and the hint zone was used
> instead (it was empty, so the bind could not reach another soa and failed).
> The same using "forward only" and also "forward first".
> So, according to my tests, it seems that bind 8.2.x are allergic to
> forwarders.
> With "forwarder feature" I mean both the usage of "forwarders" in the
> options (in named.conf, of course) and the use a zone of forward type.
> I must point out that I compared the results using different versions using
> the same configuration file, and excluding the non necessary stuff
> (sortlist, etc.).
> But it seems to me to be so odd that the forwarding feature doesn't work
> with so many versions, so I'm convinced to be in wrong with something.
>
> Can someone tell me if he/she succeded in using bind 8.2.x with forwarding?
>
> Thank you in advance. Bye. Diego.
>
> "Diego Balgera" <diego.balgera at nokia.com> wrote in message
> news:956n39$5eg at pub3.rc.vix.com...
> > Hi,
> > Kevin, you are right. But I tried with exactly the same configuration file
> > (without sortlist), and the result is the same.
> > I also tried the following:
> > - dns server bind 8.1.2 and forwarder bind 8.1.2: it works
> > - dns server bind 8.2.2P5 and forwarder bind 8.1.2: it doesn't work
> > - dns server bind 8.1.2 and forwarder bind 8.2.2P5: it works
> > - dns server bind 8.2.2P5 and forwarder bind 8.2.2P5: it doesn't work.
> > As you suggested, I'm going to try with a successive bind version.
> > Thank you for your help.
> > Diego.
> >
> >
> >
> >
> > "Kevin Darcy" <kcd at daimlerchrysler.com> wrote in message
> > news:955bio$c2f at pub3.rc.vix.com...
> > >
> > > Well, there may very well be a bug here, but since you have changed 2
> > things at
> > > once, if there is a bug it would be hard to tell whether it's something
> to
> > do
> > > fundamentally with the forwarder logic or just a configuration-file
> > parsing
> > > bug.
> > >
> > > Does forwarding work with BIND 8.2.2-p5 with *exactly* the same config
> > file you
> > > were using with BIND 8.1.2? That would help narrow down the problem.
> > >
> > > By the way, BIND 8.2.3 is now officially released. Maybe this is a bug
> > that's
> > > already been fixed.
> > >
> > >
> > > - Kevin
> > >
> > > Diego Balgera wrote:
> > >
> > > > Hi,
> > > > I'm having a problem in implementing the forwarders feature in a bind
> > > > 8.2.2P5 installation.
> > > > What I did in the previous Bind 8.1.2 host was (I'm reporting here the
> > whole
> > > > "options" section):
> > > >
> > > > options {
> > > >         directory "/etc/named.data";    // running directory for named
> > > >         // query-source address * port 53;
> > > >         forwarders { 10.20.10.12; };
> > > >         forward only;
> > > > };
> > > >
> > > > With Bind 8.2.2P5 I used the same, only adding a few sortlist:
> > > >
> > > > options {
> > > >         directory "/etc/named.data";    // running directory for named
> > > >         // query-source address * port 53;
> > > >         forward only;
> > > >         forwarders { 10.20.10.12; };
> > > >         rrset-order { class IN type A name "mnc010.mcc222.gprs" order
> > > > random; };
> > > >         sortlist {
> > > >                 { 10.20.10.0/24;
> > > >                         { 10.20.10.20;   10.20.10.30; };
> > > >                 };
> > > >         };
> > > > };
> > > >
> > > > The forwarding feature in Bind 8.2.2 doesn't work, and the host could
> > not
> > > > reach the target dns.
> > > > I couldn't find any difference in the syntax between Bind 812 and 822,
> > do
> > > > you know if I'm wrong in something or there is a bug somewhere?
> > > >
> > > > Thank you in advance.
> > > > Diego.
> > >
> > >
> > >
> > >
> > >
> >
> >
> >