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On Tue, 27 May 1997, Walter L. Preuninger II wrote:

>Below is a simple drawing of my lan/wan setup.

>I want to route traffic from Subnet 0 over to subnet 8, ie from .2 to .254
>The micom rts card drops packets not destined for the remote slip
>address(.29)
Does it really drop them? Sounds like it is simply impossible to explain
other routes to the box?

>I really dont want to buy 
>a RLB (Remote Lan Bridge) card for the micom feeder, as they cost >$1K.

>
>
>      ---------------
>aix   |          .1 |
>      ---------------
>             |
>      ---------------
>linux |          .2 |
>      ---------------
>             |
>      ---------------
>sco   |          .3 |
>      ---------------
>             |
>      --------------- 9600bps ---------------    ---------------
>micom |          .4 |=========| Micom Feeder|----| .29    .254 | linux
>      ---------------         ---------------    ---------------
>             |                                   ^^^^^^^^^^^^^^^^^^^^^^
>      ---------------                           ? Should 224 - 254 numbers
>linux | .30 .62 .94 |                           ? be routed to here?
>      ---------------                           ? I assume yes,      Nils
>

>
>Can this be done using ipfwadm or ip tunneling? 
I would use ip tunneling here. Warning, I never tried this.

On .2 and .29 load the ipip and tunnel modules.

on .2:
ifconfig tunl x.x.x.2 pointopoint x.x.x.29 netmask 255.255.255.224
route add -net x.x.x.224 netmask 255.255.255.224 dev tunl

on .29:

ifconfig tunl x.x.x.29 pointopoint x.x.x.2
route add default dev tunl

On the internet gateway of the subnet .2 resides on, you now need to 
set
  route add -net x.x.x.224 netmask 255.255.255.224 gw x.x.x.2

Please someone more knowledgeable than me correct me if I am wrong.

Nils

- -- 
     \              /                        | Nils Rennebarth
    --* WINDOWS 42 *--                       | Schillerstr. 61 
     /              \                        | 37083 Göttingen
                                             | ++49-551-71626
   Micro$oft's final answer                  | http://www.nus.de/~nils

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