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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Packet corruption occurs when using the nftables vlan pcp set command"
href="https://bugzilla.netfilter.org/show_bug.cgi?id=1744#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Packet corruption occurs when using the nftables vlan pcp set command"
href="https://bugzilla.netfilter.org/show_bug.cgi?id=1744">bug 1744</a>
from <span class="vcard"><a class="email" href="mailto:pablo@netfilter.org" title="Pablo Neira Ayuso <pablo@netfilter.org>"> <span class="fn">Pablo Neira Ayuso</span></a>
</span></b>
<pre>Hi,
(In reply to Yungan Wang from <a href="show_bug.cgi?id=1744#c5">comment #5</a>)
<span class="quote">> (In reply to Pablo Neira Ayuso from <a href="show_bug.cgi?id=1744#c3">comment #3</a>)
> > Hi,
> >
> > nft_payload mangling is lacking special handling for vlan. Linux stores
> > decapsulated vlan information in skbuff metadata fields. The matching side
> > of nft_payload already deals, but nft_payload_set_eval() is lacking this.
> >
> > I can take a look and prepare a bugfix.
>
> Hi Pablo,
>
> Yes, that's exactly the issue I wanted to report. Thanks for addressing it.</span >
I have posted a series:
<a href="https://patchwork.ozlabs.org/project/netfilter-devel/list/?series=406238">https://patchwork.ozlabs.org/project/netfilter-devel/list/?series=406238</a>
First patch is requires to make QinQ work, and second patch support for
mangling existing vlan tags (it also works with QinQ).
I am also extending existing tests infrastructure to improve coverage for this.</pre>
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