Default routes on 4.0F

From: Stuart Hartley <stuart.hartley_at_jewson.co.uk>
Date: Fri, 07 Jan 2000 11:57:47 +0000

Hi All,

AS1200 - 4.0F Pk 2

Am having problems with the default route being modified. The machine is set
up with a route in /etc/routes of :

        default 1.2.3.4

Immediately after a reboot netstat -rn shows

default 1.2.3.4 UGS
127.0.0.1 127.0.0.1
1.2.3/24 1.2.3.4

Fine. No problems with that. As soon as I try to go to another of our
networks, say, 5.6.7.8, which is reached via a router at 1.2.3.10 then a
trace gives :

1) 1.2.3.4 (my default)
2) 1.2.3.10 (get passed to the correct router)
3) 5.6.7.8 (get to the destination)

Fine. No problems with that either. However, when I do another netstat -rn I
now see

default 1.2.3.10 UGMS
127.0.0.1 127.0.0.1
1.2.3/24 1.2.3.4

Rather than adding an entry to the routing table (UGD) like I would expect
it to do it is modifying the default route - which I certainly don't want it
to do as I then lose half of my network!

I am not running GATED or ROUTED on this machine. We have other machines on
the same networks etc, running 4.0E Pk 1 that behaves as I would expect i.e.
it adds an entry to the routing table of the format

5.6.7/24 1.2.3.10 UGD

....and leaves the default gateway as it is.

Out network guys swear that the routers are not at fault...and I believe
them

Am currently working round the problem by adding lots of extra static routes
so that i can maintain visibility of the whoe of my network

Has anyone seen anything similar? or have any ideas?

Thanks

Stuart Hartley
Jewson IT
stuart.hartley_at_jewson.co.uk
Received on Fri Jan 07 2000 - 11:55:10 NZDT

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