On Thu, Jan 02, 2014 at 09:57:13PM +0100, Pablo Neira Ayuso wrote:
[...]
> I'm testing this with the last userspace iptables patch that you
> posted [1]. I'm using the example in the manpage:
> 
> # iptables -A INPUT -s 1.2.3.4 -m l2tp --tid 42
> iptables: Invalid argument. Run `dmesg' for more information.
> # dmesg
> ...
> [  490.827569] xt_l2tp: missing encapsulation
> 
> The error message is added by the patch I made on top of your last
> kernel patch (find it attached, feel free to merge it to your next v5).

Forgot attachment, here it comes.