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Fix parsing of EDNS rcode

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The EDNS rcode was incorrectly calculated. The extended rcode is formed
by taking the upper 8 bits of the extended rcode field, plus the lower 4
bits of the existing rcode.

This also adds a new trace with an extended rcode, and a testcase
parsing it.

Reported by dwhitemv25.

Fixes GH-4656
This commit is contained in:
Johanna Amann 2025-07-24 08:39:49 +01:00
parent 4399f171ae
commit 383dce9343
4 changed files with 16 additions and 1 deletions
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2
testing/btest/Baseline/scripts.base.protocols.dns.edns-rcode/output Normal file
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### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
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