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re: mysterious routes appearing



On Wed, 2003-06-25 at 05:44, Michael Weber wrote: 
> Are you running RIP or OSPF?

AFAIK, no!

>   How about a firewall?

Definately.  What effect might this have on routes appearing?

> If you reboot the machine how long does it take for the routes to show
> up?

I'm guessing as soon as eth0 comes up, although I could be wrong.  I
make this assumption because I fix the routes with route del... and then
as soon as I run ifdown eth0 and ifup eth0, the routes come back.

>   My network scripts are in /etc/rc[3,5].d/S10network.  Try creating
> a script the dumps the route table to a text file and put it in My
> network scripts are in /etc/rc[3,5].d/S11route-dump and see what it
> shows.

I had a look in here and the only place it seems to get routes from
(about line 146) is: 
# Add non interface-specific static-routes.
if [ -f /etc/sysconfig/static-routes ]; then
   grep "^any" /etc/sysconfig/static-routes | while read ignore args ; do
             /sbin/route add -$args
   done
fi    

and yes, /etc/sysconfig/static-routes is empty!

> (Or just add the route -n > /var/log/route.dump command to your
> S10network file.)

Ok I tried this, but it didn't tell me much else.  At the beginning of
/etc/rc.d/init.d/S10network I put:
route -n > /var/log/pre-route.dump
which, after a reboot contains (as I expected):

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface

and nothing else.  At the end I put:
route -n > /var/log/post-route.dump
which, after a reboot, contains (as I expected):

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
203.16.234.0    172.16.0.8      255.255.255.0   UG    0      0        0 eth0
172.16.0.0      0.0.0.0         255.255.255.0   U     0      0        0 eth0
203.39.28.0     172.16.0.4      255.255.255.0   UG    0      0        0 eth0
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         172.16.0.4      0.0.0.0         UG    0      0        0 eth0

Thanks for your help, now how would you analyze this?
-- 
Iain Buchanan <iain nospam pcorp com au>
Q:	What's the difference between USL and the Titanic?
A:	The Titanic had a band.

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