[Nfd-dev] IncomingFaceIdTag is null

[Davide Pesavento]

Hi,

Make sure that the "local fields" flag is enabled on the
application-side face. To enable the flag you need to send a
FaceUpdateCommand. You can check how the RIB manager does that for
reference: https://github.com/named-data/NFD/blob/76784d7333a0219309681ba4bc04da59c955fcc9/daemon/mgmt/rib-manager.cpp#L122

Regards,
Davide

On Wed, May 20, 2026 at 1:19 PM 郝广宇 <haoguangyu at chorustek.com> wrote:
>
> Dear team,
> Below, egw and igw implement intranet/extranet access penetration by creating a TCP link between  egw and igw NFD. Now we encounter a problem: igw always gets faceid as 0 when calling `interest.getTag<ndn::lp::IncomingFaceIdTag>`. Therefore, we cannot obtain the faceid of the TCP link between egw and igw from the interest packet. We want to know why `ndn::lp::IncomingFaceIdTag` is not working. We have confirmed that the interest packet is received via the TCP link. Could it be that support for `IncomingFaceIdTag` is disabled in the compilation of NFD or ndn-cxx, or is there another reason? We need this feature to work. Thank you very much!
>
> BR.
> GuangYu
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