Re: [Openvpn-users] Linux kernel 2.4.x

[bishop <bishop@xxxxxxxxxxxxxx>]

Cassio,

The tun module works correctly for linux kernels past 2.4.6 , I think, 
but I don't recommend using 2.4 kernels under 2.4.9, and probably would 
say to stick to point-releases 2, 9, 13, 17 and higher.  Those are 
relatively stable, 9 and 17+ being popular with distros.

You don't need to install tun 1.1 if your kernel includes tun 1.4 . 
Doing so is not an upgrade.

(That's a statement that rates up there with the "coffee is hot" warning 
I read on my coffee cup this morning, like I don't know this already and 
I don't have the sense to not burn myself.  Do we need to alter the tun 
page and put a huge Coffee Is Hot style warning?)

You could try a patch of the tun module from a higher kernel, but .. no, 
forget I suggested that.

Don't go hand-hacking your kernel package and make-installing yourself a 
support nightmare.  Upgrade your distro to the latest 
tested-and-approved release your vendor has, and you should have a very 
good tun module in your kernel after that.

With any luck, your distro (one gold star for debian, even if it's 
untested) will have a shiny 2.4.18 kernel for you to use, which should 
work really well.  The performance differences, especially under 
crushing load, are apparently noticable.

(yes, I enjoy rebuilding my kernel RPM over IPSec-intermezzo drives 
while I'm taping Law&Order with my TV card.  Can I have a few more 
seti@home jobs, too?)

No, that's not what I meant.  2.4.<7 kernels actually fall over 
spectacularly under load, randomly KILLing processes.  It's a party.

 - bish
Seen it himself.


Cassio Polpo de Campos wrote:
> Hi, all.
>
> I'd like to know since what version of the linux kernel 2.4 do the
> openvpn work? 2.4.5 has not the correct things in include/linux/if_tun.h
>
> tun.c: In function `tuncfg':
> tun.c:103: `TUNSETPERSIST' undeclared (first use in this function)
> tun.c:103: (Each undeclared identifier is reported only once
> tun.c:103: for each function it appears in.)
> make: *** [tun.o] Error 1
>
> I tried installing the tun packet from vtun.sourceforge.net/tun/, but it
> says that no upgrade is needed.
> I think since linux kernel 2.4.6 it works fine. Is this right? Do
> openvpn work with kernels older than 2.4.6?
>
> []'s
>
> cassio.
>
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> Openvpn-users@xxxxxxxxxxxxxxxxxxxxx
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