[Qemu-devel] Win98 tun networking - This is what works for me

[John Murga <john@murga.org>]

Hey

I just set up Win98 under QEmu and haven't had any problems with the 
networking, but as I see some people here seem to be having trouble I 
thought I'd post what worked for me.

First of all I am using Debian and a the latest 0.5.5 QEmu binaries ... 
In addition I have been doing most of this on a laptop that I am often 
connecting to different networks (via DHCP and otherwise), to counter 
this I installed the "dnsmasq" Debian package so that my Host can 
provide my Win98 instance with DNS regardless of what network config I 
am using (as long as the Host works).

I use the script at the end of this mail to set up the network and get 
the Host to route all the requests from the Win98 box to the outside 
world. Just so I could be sure what was happening I configured the Win98 
instance with a fixed IP, Gateway and DNS server as follows :

IP : 192.168.2.2    DNS : 192.168.2.1    Gateway : 192.168.2.1
(Don't forget, DNS is being forwarded by "dnsmasq" on the Host)

I then run QEmu as root with "qemu -hda c.img -m 256 -n net-setup.sh -b c"

I've had no problems running Lotus Notes under a Nortel VPN connecting 
to my work from my Win98SE instance running inside QEmu on my laptop at 
home... The windows "ping" binary seems a bit flaky, but Exodus, putty, 
IE and Explorer (connecting to network drives) work like a dream too, so 
I am pretty impressed :-)

Now I just need a decent video driver for this :-)

Anyway, the contents of the "net-setup.sh" script :

------ CUT HERE ------
#!/bin/bash
/sbin/ifconfig $1 192.168.2.1
/sbin/iptables -D POSTROUTING -t nat -s 192.168.2.0/24 -d ! 
192.168.2.0/24 -j MA
SQUERADE >& /dev/null
/sbin/iptables -t nat -s 192.168.2.0/24 -d ! 192.168.2.0/24 -A 
POSTROUTING -j MA
SQUERADE
echo 1 > /proc/sys/net/ipv4/ip_forward
------ CUT HERE ------