Nonexistent zone respond on query

[Barry Margolin]

In article <cvn5up$pbh$1 at sf1.isc.org>,
 "Uddenhed, Marcus" <marcus.uddenhed at horby.se> wrote:

> Hello!!
>  
> I have a strange occurrence on our dns servers.
>  
> It's like this:
>  
> on our servers we have a pointer to our webmail like this:
>  
> Forward lookup:
> webmail                 IN A    x.x.x.111
>  
> Reverse lookup:
> 111                       IN PTR  webmail.domain.se.
>  
>  
> When we do a dig against our server from an external server it doesn't
> report the above address it
> reports the internal address instead but when i do the on the dns server
> it reports the correct one.
>  
> But if we change the pointer above to 112 it suddenly report the right
> IP from the external server as well
> but when changed back to 111 it reports the internal one yet again?

Sounds like a confused NAT router.

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***