Re: iptables nftables compat weirdness

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Hi,

----- Original Message -----
> From: "Pablo Neira Ayuso" <pablo@xxxxxxxxxxxxx>
> To: "Andreas Schultz" <aschultz@xxxxxxxx>
> Cc: netfilter-devel@xxxxxxxxxxxxxxx
> Sent: Tuesday, June 16, 2015 6:07:25 PM
> Subject: Re: iptables nftables compat weirdness

[...]
 
> Could you help me diagnosing this problem? The nf_tables kernel side
> is rejecting this with -EINVAL. Is this a new bug in the 4.1-rc
> series?

I've only worked with this on 4.1-rc5. I'm currently rebuilding the
system for testing with 3.19 and 4.0, but this will take some time.

I did inject some debug printk's and was able to track the -EINVAL
to nft_target_validate. It seems that this validate is only
executed when then target chain contains some rules. The validation
is not executed when the target chain is empty.

> 
> Thank you.

Andreas
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