Missing Something Obvious - Virtual IPs

[David Cunningham]

A few hints..  First I always check the man page for help before consulting
outside resources.  The man page on your system will give you insight into
the workings of the specific version of software you're running.  For
example, "man named" at the prompt gives me a detailed list of configuration
info for BIND.  Here's the excerpt you're interested in:

     -p port#    Use the specified remote port number; this is the port
number
                 to which NAMED will send queries.  The default value is the
                 standard port number, i.e., the port number returned by
get-
                 servbyname(3) for service ``domain''.

                 NOTE: Previously, the syntax ``-p port#[/localport#]'' was
                 supported; the first port was that used when contacting
                 remote servers, and the second one was the service port
bound
                 by the local instance of NAMED. The current usage is
equiva-
                 lent to the old usage without the localport# specified;
this
                 functionality can be specified with the ``listen-on''
clause
                 of the configuration file's ``options'' statement.

The config file usually defaults to /etc/named.conf.  If you set up your NS
personally then you've edited this file before.  Here's some comments I
found in my /etc/named.conf:

options {
        directory "/var/named";
        /*
         * If there is a firewall between you and nameservers you want
         * to talk to, you might need to uncomment the query-source
         * directive below.  Previous versions of BIND always asked
         * questions using port 53, but BIND 8.1 uses an unprivileged
         * port by default.
         */
        // query-source address * port 53;
};

Note the query-source syntax is spelled out.  This listen-on syntax is the
same.  Just edit your config file appropriately.

--
<|>/\\/|<|>


<Mark.Andrews at nominum.com> wrote in message
news:200005170613.QAA12848 at bsdi.dv.isc.org...
>
> See: query-source and listen-on.
>
> Mark
>
> > I have a linux box that is my main machine and is also (now) my primary
> > DNS server.  The DNS IP is different than the IP of the main box so I've
> > aliased the new IP to it.
> >
> > However, I now have the obvious problem that BIND is responding to
queries
> > on the default IP of the machine instead of on the aliased one.  Maybe
> > this isn't a big deal save the "NOTIFY(SOA) from non-master
> > server" warnings.
> >
> > Am I mistaken, but isn't their a way to get BIND to talk to and from an
> > aliased IP address on an ethernet sub-interface?  I looked through the
> > config guide on ISC but didn't have much luck with the options that
looked
> > close.
> >
> > Here's a summary layout of the system:
> >
> > x.x.x.2 eth0 Server Default IP
> > x.x.x.3 eth0:1 Alias
> > x.x.x.10 eth0:2 ALIAS for ns1
> > x.x.x.12 eth0:3 Another Alias
> >
> > Thanks.  I feel I'm missing something obvious.
> >
> > =-=-=-=-=-=
> > Robert Hayden                   rhayden at geek.net       UIN: 16570192
> >
> >
> >
> --
> Mark Andrews, Nominum Inc.
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com
>
>
>