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cilium: improve 16bit ifindex probe on old kernels #32466

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cilium: improve 16bit ifindex probe on old kernels #32466

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Commits on Jun 20, 2024

  1. cilium: improve 16bit ifindex probe on old kernels 

    Previously, `HaveFibIfindex` probe checked the presence of
commit d1c362e1dd68 in the Linux kernel indirectly, by verifying
the presence of the redirect helpers (which were merged alongside).

Since `d1c362e1dd68` has been backported to older kernels - but
not helpers -, this commit improves `HaveFibIfindex` detection
by running a live probe.

Fixes: cilium#27642

Signed-off-by: Marc Suñé <marc.sune@isovalent.com>
    @msune
    msune committed Jun 20, 2024
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