Re: [gentoo-user] A DNS question.

[Dan Farrell]

On Sat, 3 Mar 2007 11:17:52 -0800
"Bob Young" <RKY@×××××.Net> wrote:

> This isn't strictly a Gentoo question, but I'm setting up Gentoo box
> to be used as a secondary DNS server, plus some other duties, and I'm
> hoping there is a DNS wizard reading who can authoritatively answer
> my question.
>
> First off the machine has three network cards, one with a (DHCP)
> private IP (10.10.32.1) for talking to the local (Windows Domain)
> LAN. A second NIC with a (Manually configured) IP address
> (69.12.134.79) that is publicly registered (ns.debug1.com) as a
> secondary DNS for several domains. And the third NIC has a (Manually
> configured) private IP address (192.168.0.1) that will be used to
> "sniff" all traffic that crosses the DSL modem.
>
> Obviously on a given system each NIC is usually connected to a
> different domain, my question is, whether or not it
> is /legal/possible/okay to use different *hostnames* on different
> NICs?
>
> For example, in the scenario described above, assume the windows
> domain is named "mydomain.lan," can I have 69.12.134.79 (NIC #2)
> resolve to ns.debug1.com as that is it's publicly registered name,
> while IP address 10.10.32.1 (NIC #1) resolves to gentoo.mydomain.lan?
>
> TIA
> Bob Young
> San Jose, CA.
>
>
If your question is whether you can use multiple names in DNS, I
believe you can.  However, Im not sure they all can be A records -- you
might need to use CNAME records instead.  Also, you may or may not need
PTR records to the ip from the various names.  Different ip addresses
usually deserve/get their own name, and this is appropriate.  IF you
want to have all 3 ip addresses have the same hostname, that should be
ok too, but whether that's a reasonable way of doing things is
questionable.  
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