Re: Named "Response from unexpected source"

[techs () OBFUSCATION ORG (Erik Fichtner)]

On Mon, Feb 07, 2000 at 06:36:16PM +0200, Alexandru Popa wrote:
> What are these:
>
> Feb  4 16:58:16 ns named[233]: Response from unexpected source ([194.102.116.7].61003)
> Feb  4 16:58:20 ns named[233]: Response from unexpected source ([194.102.93.174].61124)
> Feb  5 00:20:19 ns named[233]: Response from unexpected source ([194.102.93.174].62927)
> Feb  7 09:07:39 ns named[244]: Response from unexpected source ([208.147.88.9].53)
> Feb  7 18:29:47 ns named[236]: Response from unexpected source ([200.242.80.1].53)
>
> Sorry, I haven't got the packets

I've seen that behavior from misconfigured systems that have an ip alias on
an interface for the nameserver, yet fail to explicitly state in the
configuration file to use that address as the source address, and thus,
the response packets often get crafted with the "real address" of the
computer, instead of the ip alias. ...much to the confusion of the other
nameservers...

Of course, it could easily be something else entirely.

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