Re: [Qemu-devel] TUN network

[Darrin Ritter]

thanks I was able to get the tun0 interface configured
I looked at both scripts and the one written by Joe did the trick for me 
and now I have the tun0 interface,
however i am unable to ping from the VM to the Host and from the Host to 
the VM so there is no network connection
using the -user-net option I am able to access my swat configuration as 
well as the internet

currently i have the tun0 on the Host configures to 192.168.1.10 and the 
guest to 192.168.0.11 and the netmask on both to

255.255.255.0

just a note the win98 VM sees a realtek pci network card and not a 
NE2000 that I was expecting that the Docs talk about

any Ideas on the network will be appreciated

DarR!N



tun0      Link encap:Ethernet  HWaddr 00:FF:CC:26:27:8E
         inet addr:192.168.1.10  Bcast:192.168.1.255  Mask:255.255.255.0
         inet6 addr: fe80::2ff:ccff:fe26:278e/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:0 errors:0 dropped:0 overruns:0 frame:0
         TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1000
         RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)




Joe Menola wrote:

> On Tue July 27 2004 4:25 pm, Joe Menola wrote:
>  
>
> > I setup tun0 with 2 scripts in /etc.
> >
> > /etc/q-ifup
> >
> > #!/bin/sh
> > sudo /sbin/ifconfig $1 192.168.1.1
> > sudo /etc/qemu-iptables
> >
> > /etc/qemu-iptables
> >
> > #!/bin/sh
> > /etc/rc.d/init.d/iptables stop
> > echo "1" >&/proc/sys/net/ipv4/ip_forward
> > /etc/rc.d/init.d/iptables start
> >
> > You cannot set ip_forward with iptables running, hence the stop/start
> > thing. You must also setup /etc/sudoers file, so that both scripts can run
> > as root. This is a bit complex...see
> > http://www.aplawrence.com/Basics/sudo.html for info on how to set this up.
> >    
>
> I forgot to mention that 
> iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
> must also be set. I have this rule permenant in iptables, which starts on 
> boot.
> Also the reason for 2 scripts is that with a single script ip_forward was 
> sometimes getting set before ifconfig created $1, and tun0 would fail to get 
> ip_forwarding. 
> Many ways to do this, most probably better then mine, but it works for me. :)
>
> -jm
>
>
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