[162212] in North American Network Operators' Group
RE: ICMP Redirect on Resolvers
daemon@ATHENA.MIT.EDU (Keith Medcalf)
Sat Apr 6 02:21:25 2013
Date: Sat, 06 Apr 2013 00:20:48 -0600
In-Reply-To: <CAGqGmqZS9fPpDjb_+yc0yF2gs2DxdpFo-cjYsbWVjc5diFmetg@mail.gmail.com>
From: "Keith Medcalf" <kmedcalf@dessus.com>
To: "'North American Network Operators' Group'" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
> icmp redirect from 192.168.140.36: 192.168.179.80 =3D> 192.168.140.25=
4
The host attempted to send a packet to 192.168.179.80 via 192.168.140.3=
6. 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 th=
e routing table) that in the future you reach 192.148.179.80 via 192.16=
8.140.254, 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 =3D> 192.168.140.25=
4
>
> 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 consol=
e of
> these servers not others? And are they cause the problems like stoppi=
ng
> working for server/services?
> Thanks
>
> --
> Regards,
> Shahab Vahabzadeh, Network Engineer and System Administrator
>
> Cell Phone: +1 (415) 871 0742
> PGP Key Fingerprint =3D 8E34 B335 D702 0CA7 5A81 C2EE 76A2 46C2 5367=
BF90
