December 2003
Intermediate to advanced
416 pages
13h 50m
English
Here’s a cryptic message:
C:\> nslookup
*** Can't find server name for address 192.249.249.3: Non-existent domain
Default Server: UnKnown
Address: 192.249.249.3
>The “Non-existent domain” message means that there’s no PTR record for 3.249.249.192.in-addr.arpa. In other words, nslookup couldn’t find the name for 192.249.249.3, which is the first name server the resolver is configured to query. The only reason nslookup looks up this address is to print the “Default Server” startup message. Obviously, this name server’s data is messed up, at least for the 249.249.192.in-addr.arpa zone, so nslookup prints “UnKnown.”
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