Mark wasn't able to make it to IETF/hackathon in person this time, but I'm sharing the results of his preliminary greasing experiments, which I think the group should find useful. Operators of the identified auth servers may want to take note (perhaps this should be shared on the dns-operations list too).
Shumon. ---------- Forwarded message --------- From: Mark Andrews <ma...@isc.org> Date: Mon, Nov 4, 2024 at 5:18 AM Subject: Some results for consideration To: Shumon Huque <shu...@gmail.com> This was the result from a single lookup of isc.org AAAA with the grease branch. 2024-11-04T16:00:32.238+11:00 grease-dns-flags: 2001:7fd::1#53 ./DNSKEY: DNS header flag 0x40 not zero 2024-11-04T16:00:32.244+11:00 grease-dns-flags: 2001:7fd::1#53 ./NS: DNS header flag 0x40 not zero 2024-11-04T16:01:04.944+11:00 DNS format error from 2001:500:2d::d#53 resolving isc.org/AAAA for ::1#63737: empty question section 2024-11-04T16:01:05.822+11:00 grease-dns-flags: 2001:500:1::53#53 isc.org/AAAA: DNS header flag 0x40 not zero 2024-11-04T16:01:08.311+11:00 grease-dns-flags: 2a01:3f0:400:8000::32#53 nsp.dnsnode.net/AAAA: DNS header flag 0x40 not zero 2024-11-04T16:01:08.319+11:00 grease-dns-flags: 2a01:3f0:400:8000::32#53 nsp.dnsnode.net/A: DNS header flag 0x40 not zero The BADVERS response was not clearing the final reserved header bit (2001:7fd::1, 2001:500:1::53 and 2a01:3f0:400:8000::32). Additionally the question section was not included in the BADVERS response from 2001:500:2d::d. -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org
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