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bug#64678: 28.2; dns.el: dns-read won't detect DNS packets with TC bit s


From: Robert Pluim
Subject: bug#64678: 28.2; dns.el: dns-read won't detect DNS packets with TC bit set
Date: Mon, 17 Jul 2023 10:51:31 +0200

>>>>> On Sun, 16 Jul 2023 20:58:03 +0200, Marc van der Wal 
>>>>> <marc+emacs@van-der-wal.fr> said:

    Marc> Hello,
    Marc> Due to a typo in the code, the `dns-read' function masks the wrong bit
    Marc> when looking for the TC bit in the DNS packet header. This causes
    Marc> messages with the TC bit set to be returned with (truncated-p nil),
    Marc> and messages with the AA bit set to have (truncated-p t).

Yep.

Eli, I guess this is small enough to commit to master as
"Copyright-paperwork-exempt: yes"?

Robert
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