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output/ipfix: flowDirection value placed in wrong field #305
Description
ipfixprobe/init/link0.conf.example
Line 73 in 480f208
The configuration option output_plugin.ipfix.exporter.dir matches the semantic of the IPFIX flowDirection (61) field.
However, the value is placed in the ingressInterface (10) field.
This leads to problems with flow collectors (e.g. Akvorado) as the value 0 is not allowed in this field, also see RFC 2863.
Activity
MichalJankura commentedon Oct 7, 2026
Hi, I'd like to work on this one if nobody else is. Looking at
include/ipfixprobe/ipfix-elements.hpp,INPUT_INTERFACEis defined asF(0, 10, 4, &this->dir_bit_field), so thediroption of the IPFIX exporter ends up in ingressInterface (IE 10) instead of flowDirection (IE 61).My plan would be to export
diras flowDirection (IE 61, unsigned8) and stop sending ingressInterface with the direction value, together with a test for the generated template/record. Since this overlaps with #325 (meaningful ingressInterface index), @SiskaPavel would you prefer both handled in one PR, or #305 first on its own? Also, should the old behaviour be kept behind an option for backward compatibility with existing collectors?