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RE: ICMP Redirect on Resolvers
From: "Keith Medcalf" <kmedcalf () dessus com>
Date: Sat, 06 Apr 2013 00:20:48 -0600


icmp redirect from 192.168.140.36: 192.168.179.80 => 192.168.140.254

The host attempted to send a packet to 192.168.179.80 via 192.168.140.36.  192.168.140.36 forwarded the packet to 
192.168.140.254 according to its routing table, but is advising you (and the kernel has added to the routing table) 
that in the future you reach 192.148.179.80 via 192.168.140.254, not via 192.168.140.36.

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-----Original Message-----
From: Shahab Vahabzadeh [mailto:sh.vahabzadeh () gmail com]
Sent: Friday, 05 April, 2013 23:36
To: nanog () 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 192.168.140.36: 192.168.179.80 => 192.168.140.254

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





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