Best to get Telstra to load both interfaces into their named.conf.
LAN first then WAN.
The reason for this is that everyone will know your DNS by it's LAN IP,
because that is the one you have delegated it to.
However, when you make a change to your DNS zone files, your named
will transmit notify messages to all the secondaries, using the WAN IP
address as it's source.
If the Telstra DNS doesn't know that the WAN interface also belongs to the
same machine, it will reject the notify message and wait until a cache
refresh
is due before requesting an update from the primary.
Regards,
Dave
----- Original Message -----
From: "Barrie Hall" <[EMAIL PROTECTED]>
To: "Adrian Chiang" <[EMAIL PROTECTED]>
Cc: "SLUG user group" <[EMAIL PROTECTED]>
Sent: Friday, February 25, 2000 8:20 PM
Subject: Re: [SLUG] Telstra Bigpond Direct WAN IP and DNS:
> Hi Adrian,
>
> We set up lot's of Linux box's on Big Pond Direct, here is some help:
>
> > I am trying to setup my linux box for DNS on Bigpond Direct.
> > However I am a little confused about which IP address
> > to assign my box.
> >
> > I plan to be the Primary DNS with Telstra as Secondary.
> > I was given a WAN IP address, and a LAN IP range. Do I use
> > the WAN IP for the Linux box?
>
> This is up to you, however, I would always specify the LAN IP address you
> have assigned to the box.
>
> The reason for this is to do with reverse DNS. If you use the
> 139.130.xxx.xxx address Telstra have given you for you ppp interface,
> reverse DNS will never work correctly because Telstra have already
assigned
> a FQDN to the 139.130.xx.xx address (for example, 139.130.196.172 is
> barrie.telstra.net) you can't change that.
>
> This becomes a problem if you register and delegate a domain, say
> 'mydomain.com' and then specify that you primary mail exchanger, say,
> 'mail.mydomain.com' has the address 139.130.xxx.xxx given to you be
Telstra.
> What can happen is that, while the DNS lookup, 'mail.mydomain.com', will
> succeed, the *reverse* lookup will fail. This is a problem when the host
you
> are trying to send mail to has been configured to check that you are who
> claim to be by performing a reverse lookup. This will fail and the SMTP
host
> you are talking to may refuse to talk back to you or accept any of your
> mail!!!!!!!!
>
> So, when you are setting up DNS, pick the LAN address you have assigned to
> your box, not the WAN address. i.e, it will be a 203.4x.xx.xx (probably)
>
> >
> > And then for the hostname,is there a way to tell Telstra that it
> > should be 'hostname.mydomain.com' so when I register a domain thats
> > the enter as the primary and not something
> > like 'cust.abc.xyx.telstra.net' that Telstra assigns...
>
> No, Telstra need your WAN endpoint to be well known and fully resolved at
> all times, they assign the name and manage DNS for it (telstra.net)
>
> Cheers,
>
>
> Barrie
>
>
> Barrie Hall
> Senior Consulting Engineer
> Senteq Information Systems
> Internet Services Group
> [EMAIL PROTECTED]
>
>
>
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