[ILUG] Help, Please! User Mode Linux on Debian - ethertap problem

[Cormac McClean]

Hi Paul,

Thanks for your reply.

I'd forgotten that by switching to Libranet I had a newer kernel and the 
option of the tun/tap setup.

However, I still have the same type of problem:
I run UML with 
linux con0=fd:0,fd:1 con=pts con1=tty:/dev/tty8 eth0=tuntap,,,ip address

and when I run ifconfig eth0 (ip address) up on the UML I get
tuntap_open_tramp : didn't receive a message
* insmod tun
insmod: tun: no module by that name found
Opening /dev/net/tun failed : No such device
tuntap_open_tramp failed - errno = 22
tuntap_open_tramp : didn't receive a message
* insmod tun
insmod: tun: no module by that name found
Opening /dev/net/tun failed : No such device
tuntap_open_tramp failed - errno = 22

/dev/net/tun exists on the host system, but not on the UML. I'm wondering if I 
need to recompile the UML kernel to include tuntap support? (grasping at 
straws!).

Regards,
Cormac.


On Tuesday 12 October 2004 10:13 am, you wrote:
> On Tue, 2004-10-12 at 10:02, Cormac McClean wrote:
> > Hi,
> >
> >
> > Can anyone offer a suggestion on how to proceed? I have never encountered
> > the tap devices before.
>
> from an OpenVPN documentation perspective :)
> tap is windows and tun linux
> tun0 etc
> I might be barking up the wrong tree.
>
> ethertap - if you want access to the host networking and it is running
> 2.2
>
> TUN/TAP - if you want access to the host networking and it is running
> 2.4. Also, the TUN/TAP transport is able to use a preconfigured device,
> allowing it to avoid using the setuid uml_net helper, which is a
> security advantage.
>
> http://user-mode-linux.sourceforge.net/UserModeLinux-HOWTO-6.html
>
>
> This may be of more use to you :)
>
> > Help me Obi Wan, you're my only hope!!!
>
> him and a bird called Tux :)
>
> > Thanks in advance,
> > Cormac.
> >
> > ______________________________________________________________________
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>
> Have lots of fun
>
> Paul O'Malley

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