Re: --iif argument unrecognized by iptables

[Pascal Hambourg <pascal.mail@plouf.fr.eu.org>]

Andy Theuninck a écrit :
> iptables -j ROUTE -h gives identical output to iptables -h.

Even at the very end ? It should display help about the ROUTE target 
like here :

> ROUTE target v1.11 options:
>     --oif       ifname          Route packet through `ifname' network interface
>     --iif       ifname          Change packet's incoming interface to `ifname'
>     --gw        ip              Route packet via this gateway `ip'
>     --continue                  Route packet and continue traversing the
>                                 rules. Not valid with --iif or --tee.
>     --tee                       Duplicate packet, route the duplicate,
>                                 continue traversing with original packet.
>                                 Not valid with --iif or --continue.

Else it means this target is not supported by your iptables build.
I remember that (by default ?) some versions built only shared libraries 
for matches and target supported in the kernel, so you had to rebuild 
iptables after enabling a new feature in the kernel.