> I'm trying to use IP tunneling in linux (ip-over-ip encapsulation).
>
> I'm using kernel 2.0.35, and have compiled with the necessary
> options to use IP-Tunneling.
>
> But, the devices tunl0 and tunl1 were not created in /dev
Network devices don't have device files. There isn't a /dev/eth0 or a
/dev/lo either.
> so I can not issues command concerning these devices.
Once the necessary support is in the kernel (i.e. if it is built-in,
or after new_tunnel.o and ipip.o have been loaded), you can just use
ifconfig on the device.
> I read in /usr/src/linux/drivers/net/README.tunnel
> about loading ipip.o and tunnel.o (actually new_tunnel.o)
> with insmod.
>
> I have /usr/src/linux/net/ipv4/ipip.o
> and /usr/src/linux/drivers/net/new_tunnel.o
>
> When I try to run insmod, it gives em the following
> answer:
>
> >> # insmod /usr/src/linux/net/ipv4/ipip.o
> >> kernel_version needed, but can't be found
> >> #
>
> Tha same happens with new_tunnel.o.
I think that this indicates that the modules were compiled for a
different kernel, or using a different setting of CONFIG_MODVERSIONS.
Either way, you should probably recompile both the kernel and modules.
> I couldn't go further. I also read somewhere else
> that I should look the file /proc/net/dev.
>
> I did so and the contents are shown below
> > # cat /proc/net/dev
> > Inter-| Receive | Transmit
> > face |packets errs drop fifo frame|packets errs drop fifo colls carrier
> > lo: 8682 0 0 0 0 8682 0 0 0 0 0
> > tunl0: 0 0 0 0 0 0 0 0 0 0 0
> > tunl1: 0 0 0 0 0 0 0 0 0 0 0
> > eth0: 883946 0 0 0 0 729972 0 0 0 11904 0
> > eth0:1: 399885 0 0 0 0 312378 0 0 0 0 0
> > eth1: 0 0 0 0 0 0 0 0 0 0 0
> > #
> the devices tunl0 and tunl0 apear in the file, but
> not in /dev.
They won't.
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