Re: [Qemu-devel] eth0 problems

[Lonnie Cumberland <lonnie@neenet.com>]

Is there a way for me to tell if the TUN module has been compiled into 
this kernel?

I looked at the src for the kernel via the "make menuconfig" and it 
showed the TUN/TAP device as a Module. Also the module exists in the 
/lib/modules directory.

how can I load the tun module?

Thanks,
Lonnie


Joe Menola wrote:

>On Sat August 28 2004 7:55 pm, Lonnie Cumberland wrote:
>  
>
>>I just looked at  the kernel sources for my 2.6.3-7mdk kernel and
>>TUN/TAP has already been compiled in as a module.
>>
>>Although there is no /dev/net/tun0 listed or /dev/tun0 as well
>>    
>>
>
>/dev/net/tun0 wont exist until module "tun" is loaded.
>
>If you wish to setup a tun device, I've created a small and raw howto for my 
>own use on what works for me. Should give you a decent start...
>
>  
>
>First off, kernel needs tun networking support compiled in and module loaded. 
>
>"eth0" =host device connected to lan 
>"/etc/rc.d/init.d" = path to init scripts
>adjust as needed
>
>		Setup Masquerade 
>
>Run in terminal as root:
>	# iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE 
>	#/etc/rc.d/init.d/iptables save
>
>		Sanity check
>	#/etc/rc.d/init.d/iptables start
>	#/etc/rc.d/init.d/iptables status
>
>Rule "Chain POSTROUTING (policy ACCEPT)" 
> should contain:
>	"MASQUERADE  all  --  anywhere             anywhere"
>
>		Create Ifup scripts
>
>1- Create file: /etc/qemu-ifup 
>
>#!/bin/sh
>sudo /sbin/ifconfig $1 <ip address>
>sudo /etc/qemu-iptables
>#end 
>
>2- #chmod 777 /etc/qemu-ifup
>
>3- Create file /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
>#/usr/sbin/dhcpd -q tun0
>#end
>
>4- #chmod 777 /etc/qemu-iptables
><<<<<<<<<<
>	
>
>
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>  
>