Urgent: DNS Header Request Id corruption

Paul Vixie vixie at as.vix.com
Tue Oct 15 14:20:26 UTC 2002

"kapilburman" <kapil at zlemail.com> writes:

> Is it possible that the Request ID in DNS Request query is different than
> the Request ID in Response???  This problem happens transiently. Any
> ideas, how can it happen????

usually it means someone is flooding you with responses, trying to
guess your query-id's, hoping you will receive one of their answers
before you get a real one, so that your cache will have their (bad)
data in it rather than the real (good) data from the source.
Paul Vixie

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