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CSLIP / TCP/IP Guru Needed

I need some help with my network config.  I'm hoping you can help me.

Here's my current configuration:


A is the IP subnet of my ISP
B is an IP subnet for a CSLIP link between 1 and 2
C is the IP subnet of my LAN
1 is my internet "gateway" - running Debian
2 is my internet "router" - running Debian

The only reason the B subnet exists is as a "bandwidth limiter".  My ISP
only wants me to use 112Kbps, so to create an artificial bottleneck, I put
a system (#1) on his LAN and set up a direct CSLIP link between that box
and our LAN.

This system is working great.  All routing is configured and most
everyone's happy.... Except me....  <grin>

The way things are configured, I've had to assign a whole subnet to B to
configure routing.  I've used a .224 mask on a Class C to create 6 subnets
of 30 hosts.  I need every address I can get and right now, I've got 28
wasted addresses on the B subnet - only two addresses are needed as it is a
direct CSLIP link - basically the "sl0" interface on 1 and 2.

My questions are:

I once read/heard somewhere that it might be possible to do unnumbered
CSLIP interfaces.  Is this possible?  If so, how do I do it?  (Pointers to
manual/docs gladly accepted....)  

Do you have any suggestions for other alternatives on how to limit the
bandwidth above?  Cost _is_ an issue.

TIA for your comments,

Kevin Traas
Systems Analyst
Edmondson Roper CA

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