Re: [LARTC] Policy routing missing default table?

[Adrian Chung <adrian@enfusion-group.com>]

On Tue, Jun 05, 2001 at 02:04:01PM +0200, Juri Haberland wrote:
> > I was under the impression that my 3 main tables should have been
> > 'local', 'main', and 'default'.  'main' would contain routes to adjacent
> > networks, and 'default' would contain default routes.  So I could have
> > solved my problem by just creating a table with precidence in between
> > main and default, and changed the default gateway for 192.62.100.0/24
> > without changing network routes too.
> 
> Well, according to the "Linux 2.4 Advanced Routing HOWTO" the default
> table (or 253) should be empty and the default route should be in
> 'main'.

Hmm, that's strange.  So in the situation I have, where the router is
connected to 3 adjacent networks physically, and I only want to alter
the default gateway for one subnet, without affecting the other local
network routes, how would I do it?

I'm assuming that if I insert a table before 'main', as I currently
do, I have to duplicate all the routes to other local networks.

If I add the table after 'main', the default route that's in main
overrides whatever default route I would put in the new table.

Is this logic sensible?

> > Does this make sense?  And if so, does anyone know why I have a table
> > '253' with nothing in it, and no 'default'?
> 
> Actually, I don't know why there isn't a default table but one named
> '253'. I have the same here on a RedHat 7.1 system running kernel 2.4.5
> with iproute2-ss000305.

Okay, at least I'm not alone. :)

--
Adrian Chung (adrian at enfusion-group dot com)
http://www.enfusion-group.com/~adrian
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