On Thu, 8 Apr 1999, Richard B. Johnson wrote:
> >
> > > > I have a strange messages at /var/log/debug:
> > > > Apr 7 19:25:00 hurricane kernel: ip_rt_advice: redirect to 194.186.140.201/00 dropped
> > > > Apr 7 19:25:14 hurricane kernel: ip_rt_advice: redirect to 194.186.140.201/00 dropped
> > > >
> > > > But this addresses are really exist in my network. During this messages,
> > > > machines with this ip are not available. What does this mean?
> > >
> > > Someone sent you a ICMP redirect for these IPs. The kernel installed
> > > a temporary route for it. Because these hosts didn't answer it concludes
> > > after some time that the redirect was bad and removes the temporary route.
> > > If it bothers you feel free to comment it out, but it would be better to
> > > fix the routing so that no ICMP redirect is needed.
> > >
> > I don't need routing for this machines, because they all are in one
> > ehternet segment. So, i can't understand, where the problem with
> > routing? May be this is an hacker attack?
> > Denis Chapligin
> >
>
> Check to see if any of the machines are running the routed daemon. This
> is running by default on Sun machines. This causes them to advertise
> routes (even though they share the same wire as everybody else). This
> results in strange routing-table entries on cooperating machines and
> duplicate packets on the physical link.
>
> Physically removing the routed daemon on our Suns (about 15 to 20 of
> them), and rebooting dropped the LAN traffic to about 1/10th its
> previous. We had Suns routing to Suns which were routing to Suns,
> etc., eventually going to somewhere local.
>
I don't have routed and any software of this class.
Denis Chapligin
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