The problem lies within the libc stub resolver. I patched mine, so it always sets the AD flag in queries, which prompts the recursor to set AD in response if DNSSEC validation succeeded.
Verbose explanations (one of my seldom public blog posts ;) and small patch here: http://bd.hauke-lampe.de/dnssec/how-to-get-dnssec-ad-flag-with-glibc.html
The problem lies within the libc stub resolver. I patched mine, so it always sets the AD flag in queries, which prompts the recursor to set AD in response if DNSSEC validation succeeded.
Verbose explanations (one of my seldom public blog posts ;) and small patch here: bd.hauke- lampe.de/ dnssec/ how-to- get-dnssec- ad-flag- with-glibc. html
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