[mpls-linux-general] problem with iptables. Error invalid argument type.

[J. N. <oc...@gm...>]

Hi all,


I'm trying to make the scenario (QoS scenario) described in MPLS-Linux Labs
by Adrian Popa with VNUML (
http://www.dit.upm.es/vnumlwiki/index.php/Main_Page). I have a lot of
problems to achieve a kernel that I can compile (a lot of problems with uml
architecture). After aplying a lot of patches I finally be able to have a
testbed with mpls support and a filesystem with debian. The only kernel that
I can achieve to compile with uml and without errors is 2.6.18.1 (with mpls
patched too) but the problem is that if I install iptables like it syas in
http://www.elcom.pub.ro/~adrian.popa/mpls-linux/mpls-linux-docs/1-3-installation.html,
then when I launch iptables  for example in:

var1=`mpls nhlfe add key 0 instructions ds2exp 0xf 0x1e  0x3  0x0 0x0 exp2tc
0x3 0x1  0x0 0x3 push gen 2000 nexthop eth3 ipv4 10.0.5.3 | grep key |cut -c
17-26`

#create a FEC: packets with DSCP=0x1E and DSCP=0x00 go to nhlfe $var1
iptables -A FORWARD -m dscp --dscp 0x1e -j mpls --nhlfe $var1

it launches an error saying iptables: invalid argument type. I've been
seeking in Google and I see that probably is because the rpm file that I've
downloaded is for kernel 2.6.15.1 (like Adrian do in his manual) but
actually I can't compile any kernel previosu than 2.6.18.1 (vnuml problems)
and I dont know how to compile iptables for that version of Kernel. I try a
lot of options, trying to install iptables in the filesystem with 'chroot',
try to install when in the guest machine (run the virtual machines and
trying to install iptables.deb in every machine)... but all have the same
result. I try to know how to compile with that kernel support (2.6.18.1) or
if there is a version of MPLS for that kernel with a .rpm or .deb packet of
iptables.

The previous scenarios that don't use iptables run good in my mpls testbed
and changing my virtualitzacion system is not an option becaus I have to do
it with VNUML.

Thank you in advance for all advices,

regards