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date: Mon, 20 Nov 1995 20:46:55 +0000 ()
From: Daniel Verhoeven <techno@kick.knooppunt.be>
To: gated-people@merit.edu, freebsd-questions@FreeBSD.org
subject: fake subnet
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Dear Friends,

I switched from useing routed to gated on a FreeBSD 2.0.5. We have a PPP 
link over a leased line to our provider. But we only have one real 
IP-number, namely 194.10.201.200.

We have a small local Ip-network on ethernet (ed0), using the fake net 
192.168.31 and we have three dialin modems for PPP (using ppp for 
cleint-ppp) setting up links between:

192.168.32.254 <-> 192.168.32.1
192.168.32.254 <-> 192.168.32.2
192.168.32.254 <-> 192.168.32.2

respectively.

Here is a sample output of netstat -rn:

Routing tables

Internet:
Destination      Gateway            Flags     Refs     Use     Netif Expire
default          194.10.201.254     UGSc       24      255      ppp0
127              127.0.0.1          URc         0        0       lo0
127.0.0.1        127.0.0.1          UH          0      203       lo0
192.168.31       link#1             UC          0        0 
192.168.31.125   link#1             UHLW        2    76862 
192.168.31.133   0:0:e8:ca:c6:71    UHLW        0        4       ed0    339
192.168.31.254   0:0:e8:cb:69:20    UHLW        1      781       lo0
194.10.201.254   194.10.201.200     UH         24        0      ppp0
224              link#1             UCS         0        0 
224.0.0.9        127.0.0.1          UH          0        4       lo0

And one of ifconfig -ia

ed0: flags=8863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	inet 192.168.31.254 netmask 0xffffff00 broadcast 192.168.31.255
	ether 00:00:e8:cb:69:20 
lp0: flags=810<POINTOPOINT,SIMPLEX> mtu 1500
lo0: flags=8009<UP,LOOPBACK,MULTICAST> mtu 16384
	inet 127.0.0.1 netmask 0xff000000 
ppp0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1500
	inet 194.10.201.200 --> 194.10.201.254 netmask 0xffffff00 
tun0: flags=50<POINTOPOINT,RUNNING> mtu 576
tun1: flags=50<POINTOPOINT,RUNNING> mtu 1500
tun2: flags=50<POINTOPOINT,RUNNING> mtu 512
tun3: flags=11<UP,POINTOPOINT> mtu 1500
	inet 0.0.0.0 --> 0.0.0.0 netmask 0x0 


My gated.conf looks like this:

# Only broadcast RIP information for xxx.xxx.yy out the ed Ethernet interface
#
#
# tracing options
#


traceoptions "/var/tmp/gated.output" replace size 100k files 2 general ;

#
rip yes {
   broadcast ;
   interface all version 1 ;
  traceoptions route ;
   } ;
#
#

#
# Turn on a bunch of tracing info for the interface to the kernel:
kernel 	{
   traceoptions remnants request routes info interface ;
    	} ;

#
# Propagate the route to xxx.xxx.yy out the Ethernet interface via RIP
#

export proto rip {
        proto direct {
                194.10.201.200 masklen 24 ;
             } ;
     	} ;

#
# Accept routes from RIP via ed Ethernet interfaces

import proto rip interface ed0 tun0 tun1 tun2 {
     all  ;
	} ;



When I used routed, defining some static routes, I could ping from within 
the network to outside. This isn't possible anymore. Can someone help us. 
We are the system of the Association for Progressive Communication in 
Belgium.

Many thans beforehand.

Daniel Verhoeven.