Shorewall users - May 2003 - Masquerading an interface which is down

Hello,

I am running shorewall 1.2.8 with a 2.4.21 kernel.
I only have 2 computers, a winxp client and a mandrake 
server/firewall/gateway with a ADSL connection. My shorewall 
configuration works fine except in one case : I would like to access the 
internet even if my client is off. I am using the masquerading 
founctionality :
interface         subnet
ppp0             eth0

with eth0 my local network interface. When starting shorewall i get this :
Masquraded subnets and hosts:
error: unable to determine the routes through interface eth0

I have also read in the doc that :
"In the latter instance, the interface must be configured and started 
before Shorewall is started as Shorewall will determine the subnet based 
on information obtained from the ''ip'' utility."

So my problem is that when my client is off, my eth0 interface is down, 
indeed....
It is very annoying.... Is there a turnaround or something i missed to 
enable my server to connect to the internet with shorewall active 
(without using routestopped) ????


Thanks

DD

On Fri, 23 May 2003, c_inconnu wrote:
> with eth0 my local network interface. When starting shorewall i get this :
> Masquraded subnets and hosts:
> error: unable to determine the routes through interface eth0
>
Change your /etc/shorewall/masq file entry from:

ppp0	eth0

to

ppp0	<your local network>

For example, if your local network is 192.168.1.0/24, put this in
/etc/shorewall/masq:

ppp0	192.168.1.0/24

If you have ''detect'' in the third column of the entry for eth0
in
/etc/shorewall/interfaces, you''ll want to change that to the actual
broadcast address of your local network.

-Tom
--
Tom Eastep    \ Shorewall - iptables made easy
Shoreline,     \ http://www.shorewall.net
Washington USA  \ teastep@shorewall.net