Multiple NS RR's
barmar at bbnplanet.com
Sun Nov 21 23:15:15 UTC 1999
In article <3837E21A.37851824 at hermansader.net>,
Keith Hermansader <keith at hermansader.net> wrote:
>Is it possible to have multiple NS RR's pointing to a single IP?
>Basically, does the in-addr record have to match the forward for a NS
>entry for lookups to work properly? BIND version running would be 8.x
The only thing that does reverse lookup of nameserver addresses is
NSLOOKUP, and it only shows the name of the address you're querying.
Nothing in the normal DNS resolution process cares whether a nameserver has
a PTR record at all, much less whether it points to the same name as in the
NS record for the zone.
However, there's some code in BIND that tries to determine whether the
local host is supposed to be authoritative for a domain it's being queried
about, and one of the checks it does is whether the NS hostname matches
what it thinks its own hostname is. I believe recent versions of BIND also
check the address, to handle cases like yours, so your configuration
shouldn't be a problem.
Barry Margolin, barmar at bbnplanet.com
GTE Internetworking, Powered by BBN, Burlington, MA
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