[nos-bbs] anyone using ripd (44ripd) on linux hosting NOS ?

[Jay Nugent]

Greetings maiko,

On Wed, 1 Sep 2021, M Langelaar wrote:

> Time to humble myself, and someone may have explained this already ...
>
> I must admit I have always had NOS do the 44 on my systems, spoiled I suppose
> with a fixed commercial IP address all these years. How do you guys have JNOS
> 44 routing setup IF you are running ripd (44ripd) on your linux host ? I 
> assume you
> have the ripd because you don't have a static IP address for your cable/dsl 
> service ?
>
> How do you have the tun interface configured so that JNOS takes on the 44 
> address ?
>  (do you really need to have 44 address for the  linux host system ?)



    See:  http://server1.nuge.com/~drg/AUTOEXEC.NOS


    You will see that I provide two configurations for the TUN interface. 
One if you are behind a NAT firewall, the other if you have a routed 
static public IP address on your LAN.  In the later case, the JNOS end of 
the Tunnel is addressed with the Public IP address that other's will have 
in their ENCAP.TXT route table.

    You will also see that I do *not* use ARP (and waste IP addresses) on 
the Tunnel as it ONLY has two ends, so there is no need to ARP.

    I also use "Proxy ARP" on the Ethernet interface of the hosting Linux 
system.  In this way, the Ethernet responds to TWO DIFFERENT IP ADDRESSES, 
but *routes* them diferently.  One IP addr goes to the Linux TCP/IP stack 
while a different address goes to the JNOS TCP/IP stack.

   Hope that the embedded instructions make it clear enough to help you 
configure a working system :)


    Enjoy!
       --- Jay WB8TKL
           o ARRL Michigan Section ASM for Digital Technologies
           o Chair, Michigan Section "Digital Radio Group" (DRG)