BGP Default route

[dspazman at epicup.com]

I'm having a problem with sending a default route.

I have two providers I provide a full routing table to through BGP.  I'm trying to set up a 3rd BGP session on another interface to a downstream client, so I can take his announced prefixes and announce them to my upstream ISPs.  The main issue is they only want me to export the default route (0.0.0.0/0) to them, not the full table.

Does anyone have a simple example of this, exporting just the default route to a downstream client, but accepting his prefix (X.X.X.X/24).