Re: [PATCH] extensions : multiple to-dst/to-src arguments for ip6t_DNAT/SNAT not reported

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Hi Thierry,

On Tue, Jan 16, 2018 at 01:44:37PM +0100, Thierry Du Tre wrote:
> This patch is fixing the detection of multiple '--to-destination' in a DNAT rule and '--to-source' in SNAT rule for IPv6.
> Currently, when defining multiple values for these, only the last will be used and others ignored silently.
> 
> The checks for (cb->xflags & F_X_TO_[DEST/SRC]) always fails because the flags are never set before.
> It seems to be a copy-paste artefact since introduction of the IPv6 DNAT/SNAT extensions based on IPv4 code.
> 
> I also removed the kernel_version checks because they seem useless. Extensions for IPv6 DNAT/SNAT are using xt_target with revision 1.
> That seems only added since kernel version 3.7-rc1 and therefore the check for > v2.6.10 will always return true.
> The check is probably also coming from the IPv4 copy-paste.

Thanks for fixing up this.

Would you also send us a patch to add tests:

        extensions/libip6t_DNAT.t
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