[lwip-users] Re: [lwip] Running Lwip

[Joe MacDonald]

Hi and welcome to the list.  :-)

> I have lot of Queries:
> * Which tun package to be downloaded ?

Well, since you're running a 2.4 based system, the Universal Tun
interface code is already in your kernel.  You'll probably need to
recompile it to include tun support (Red Hat typically doesn't turn it
on from what I hear) but that's a discussion for another list.  Anyway,
look in your kernel compilation options (make menuconfig is my personal
favorite option) for your networking devices and there should be one
named Universal Tunneling Inteface or something similar.  That's what
you want.

*But* you definitely want the latest kernel source.  Between 2.4.2 (I
think) and 2.4.15 Tun was broken.  There still seems to be things wrong
with 2.4.16, but I might be out to lunch on that.  Eiter way, be certain
you do _not_ turn on DevFS.

> * How to install tun package ?

See my other comment.

> * How to test tun package ?

The best test is using Vtun, but that's a lot of overhead.  If there is
enough interest, I'll post some code I have that does user-space NAT
using Tun.  It's pretty cool to hook up a tcp-dump to each tun interface
and watch your packets get rewritten.  Well, I thought it was cool.
Okay, fine, it isn't very cool, but I get a lot of pleasure out of it.
:-)

> * Which lwip is to be installed ?

The latest, of course.  0.5.0, I think.

> * How to test ?

That's in the documentation provided in the 0.5.0 tarball.  Check the
README.

Good luck,
-Joe.

-- 
Joe MacDonald
:wq
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