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- Fix that when a partial EDNS option is in a query, the

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response is a more RFC conformant FORMERR, since the EDNS
  option is malformed. Also fix to have an EDNS size for
  the reply error encoding for failed EDNS parse of the query.
  Thanks to Qifan Zhang, Palo Alto Networks, for the report.
This commit is contained in:
W.C.A. Wijngaards
2026-09-03 17:20:35 +02:00
parent 11900cc2b0
commit bd210d124b
4 changed files with 34 additions and 3 deletions
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testdata/edns_downstream_cookie_short.rpl
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+18
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@@ -53,4 +53,22 @@ SECTION QUESTION
test. IN TXT
ENTRY_END
; Check an EDNS option with a too short content
; The EDNS OPT rdata is too short, for the option opt_len.
STEP 30 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
test. IN TXT
SECTION ADDITIONAL
. 32768 CLASS1230 OPT \# 04 00 0a 00 08
ENTRY_END
STEP 31 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA DO FORMERR
SECTION QUESTION
test. IN TXT
ENTRY_END
SCENARIO_END