ICMP Redirect on Resolvers

Sat Apr 6 06:20:48 UTC 2013

> 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 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 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
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