Wireshark-bugs: [Wireshark-bugs] [Bug 7555] DNS AD flag not shown properly
Date Index · Thread Index · Other Months · All Mailing Lists
Date Prev · Date Next · Thread Prev · Thread Next
From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Thu, 2 Aug 2012 14:46:59 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7555

Jaap Keuter <jaap.keuter@xxxxxxxxx> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |DUPLICATE

--- Comment #3 from Jaap Keuter <jaap.keuter@xxxxxxxxx> 2012-08-02 14:46:58 PDT ---
Ref bug 2472

See RFC 2535, 4033, 4034 and 4035.

The AD bit has no place in a DNS query message, it is only relevant in DNS
responses.
It should not even be set in query, as per RFC 4035:

4.6. Handling of the CD and AD Bits

   ......

   A security-aware resolver MUST clear the AD bit when composing query
   messages to protect against buggy name servers that blindly copy
   header bits that they do not understand from the query message to the
   response message.

So we might want to add an expert item if the flag is set in a query. 
This suggestion is _not_ in support of presenting this bit as AD flag.

*** This bug has been marked as a duplicate of bug 2472 ***

-- 
Configure bugmail: https://bugs.wireshark.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching all bug changes.