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ICMP Redirect on Resolvers

> icmp redirect from =>

The host attempted to send a packet to via forwarded the packet to according to its routing table, but is advising you (and the kernel has added to the routing table) that in the future you reach via, not via

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> -----Original Message-----
> From: Shahab Vahabzadeh [mailto:sh.vahabzadeh at gmail.com]
> Sent: Friday, 05 April, 2013 23:36
> To: nanog at nanog.org
> Subject: ICMP Redirect on Resolvers
> Hello everybody,
> I have two DNS Server (resolver) running on FreeBSD 9.0, I always see in
> console messages like this:
> icmp redirect from =>
> and lots of messages like this, mostly ip addresses not belong to me, and
> some times these resolvers stop working.
> My question is what are these messages? why they only shown in console of
> these servers not others? And are they cause the problems like stopping
> working for server/services?
> Thanks
> --
> Regards,
> Shahab Vahabzadeh, Network Engineer and System Administrator
> Cell Phone: +1 (415) 871 0742
> PGP Key Fingerprint = 8E34 B335 D702 0CA7 5A81  C2EE 76A2 46C2 5367 BF90