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sammarcow
Asked: 2011-08-31 10:30:47 +0800 CST

Nslookup returns different results every run

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When I run nslookup using our (it defaults our domain NS as the source of information) I get different results every time for known computers on our network.

Can some one explain if this is normal, why it is normal? Or if it needs to be resolved the next steps?

domain-name-system dhcp nameserver nslookup

1 Answers

  1. Best Answer

    According to RFC1034 §5.3.3,

    In addition to the names and addresses of the servers, the SLIST data structure can be sorted to use the best servers first, and to insure that all addresses of all servers are used in a round-robin manner

    That is to say, if there are multiple resource records matching the record type of the query, most name servers will return them in a round-robin manner (the additional records may or may not be included in the answer section or displayed by the resolver). My guess would be that you have multiple records for the same domain, each with different content.

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