- dns-wg - mailman.ripe.net

DNS DevRoom at FOSDEM2024 - Call for Participation
by Pieter Lexis 16 Nov '23

16 Nov '23

Hello DNS enthusiasts and other developers, After four earlier successful and packed DNS devrooms, we are happy to announce a half-day DNS devroom at FOSDEM 2024. As with the previous events, we hope to host talks anywhere from hardcore protocol stuff, to practical sessions for programmers that are not directly involved with DNS but may have to deal with DNS in their day to day coding or system administrators responsible for DNS infrastructure. We have been allotted a room on Saturday the 5th of February 2024, the second half of the day. Probably starting around 13:00 (CET). If you have something you’d like to share with your fellow developers, please head to the submission page at https://fosdem.org/submit . Examples of topics are measuring, monitoring, DNS libraries, anecdotes on how you’ve (ab)used the DNS, and group discussions of upcoming technologies. For the upcoming technologies, we're looking for submissions on Applications Doing DNS (ADD), SVCB/HTTPS records and applications thereof, and stub-resolver configuration. Here’s the 2023 schedule, for your inspiration: https://archive.fosdem.org/2023/schedule/track/dns/ . We expect to schedule 30 minutes per talk, including questions, but if you need more or less time, we can discuss this. The deadline for submissions is December 8th 2023. Reach out to dns-devroom-manager(a)fosdem.org if you run into any trouble. this CfP lives online at https://blog.powerdns.com/2023/11/16/fosdem-2024-dns-developer-room-call-fo… - any important changes will be posted at least there See you there! Cheers, The FOSDEM 2024 DNS Devroom organizers

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RIPE 87 DNS-WG Agenda
by Moritz Müller 09 Nov '23

09 Nov '23

Hi everyone, Here’s the agenda for the meeting of the DNS WG at RIPE 87. We’ll be having our meeting Wednesday, 29 November at 9:00 am. - Kick-off and welcoming our new co-chair (5 min) - DNSSEC Non-deployment. What can be done? - Edward Lewis (25 min) - Introducing DELEG - Dave Lawrence (20 min) - Resolver task force update - Shane Kerr (15 min) - IETF DNSOP update - Tim Wicinski (15 min) - DNS update from the RIPE NCC (10 min) We are looking forward seeing you in Rome or online. Moritz on behalf of the DNS-WG co-chairs

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Revised timeline for DNS WG co chair selection
by Joao Luis Silva Damas 07 Nov '23

07 Nov '23

Dear Colleagues, We are re-issuing the call for volunteers for the soon-to-be-vacant co-chair slot. Note the new dates, with the call for candidates extended by one week to Sunday 12th November ************************************************************************************* Please DO NOT reply to this message if you wish to propose a volunteer. ************************************************************************************* Call for RIPE DNS Working Group Chair ------------------------------------------------------ In accordance with the chair selection process we announce that the term of one of our co-chairs (Joao Damas) will expire at the upcoming RIPE Meeting (RIPE 87, near Rome) and we would like to invite volunteers, or nominations for someone to become a co-chair of the DNS working group. Anyone may volunteer, and anyone may be nominated by someone else (we will check with the person for acceptance). Note that having served two terms, in accordance with the selection process Joao is not eligible. To do this, please send a mail to <dns-wg-chairs AT ripe.net <mailto:dns-wg-chairs@ripe.net>> before end of Sunday 12 November 2023 (UTC). Again, please DO NOT send your volunteer/nomination to the DNS WG mailing but rather the dns-wg-chairs mail alias. It would be helpful for candidates to give some words as to why they think they ought to be a co-chair, what new ideas, or improvements they might bring, and so on. We will publish the list of volunteers, along with anything the volunteers wish to include with their nomination, to this mailing list on Monday 13 November 2023. Discussion and support (or opposition) for each candidate can then be offered on the list. At the DNS working group session at RIPE 87, Moritz and Wilhelm hope to announce consensus based on the mailing list discussion. Timeline ———— Tuesday, 5 September 2023 This call for volunteers posted to the dns-wg mail list ###### Sunday, 12 November 2023 Deadline for volunteers/nominations ###### Monday, 13 November 2023 List of candidates and call for support posted to the mail list Monday, 27 November 2023 Deadline for showing support for candidates/volunteers on the mail list Tuesday, 28 November 2023 DNS WG session at RIPE 87 References ---------- The RIPE working group chair job description is included in ripe-692: https://www.ripe.net/publications/docs/ripe-692 The DNS working group chair selection process is documented here: https://www.ripe.net/participate/ripe/wg/dns/dns-wg-chair-selection-process We have 3 co-chairs so the term is 3 years. The current approach was announced on this mailing list on 2018-07-17: https://www.ripe.net/ripe/mail/archives/dns-wg/2018-July/003566.html As always, please feel free to reach out to any of the chairs directly, to us as a group at dns-wg-chairs AT ripe.net <mailto:dns-wg-chairs@ripe.net>, or discuss this or any other any relevant topic on this mailing list.

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DNS-WG at RIPE 87: Call for presentations
by Moritz Müller 06 Nov '23

06 Nov '23

Dear colleagues, It still might feel far away, but RIPE 87, taking place in the Lazio region, is coming closer. The meeting will be held from 27 November to 1 December 2023. This e-mail is our first official call for topics for the RIPE DNS working group session. If you interested in presenting, please send your proposals to dns-wg-chairs(a)ripe.net. Please also indicate how much time you would need for your presentation including Q&A. As usual, both in-person and remote participation in the working group is possible. We plan to send out a first round of notifications beginning of October. Cheers, Moritz — on behalf of the RIPE DNS WG chairs

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Re: [dns-wg] post-mortem for ripe.net DNSSEC problem on 1 November 2023
by Janos Zsako 05 Nov '23

05 Nov '23

Dear Paul, > Please find below the post mortem for the DNSSEC problem that caused > most of RIPE NCC's services to become unavailable yesterday. Thank you very much for the detailed post-mortem. > Please reach out if you have any questions or feedback. I would like to comment on a single item, see below. > New or changed records were still properly signed (363 of > them), which meant that our monitoring, which checks the signature > validity of the SOA record at the zone apex, missed this issue. It may be a good idea to check for the lowest timestamp of signature validity (of the RRSIG records) in the zone. We monitor this for .hu from the beginning (i.e. since we started signing the zone with DNSSEC). Best regards, Janos

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post-mortem for ripe.net DNSSEC problem on 1 November 2023
by Paul de Weerd 04 Nov '23

04 Nov '23

Dear colleagues, Please find below the post mortem for the DNSSEC problem that caused most of RIPE NCC's services to become unavailable yesterday. Please reach out if you have any questions or feedback. Thanks, Paul de Weerd Manager Global Information Infrastructure team RIPE NCC Summary On 1 November, from 10:45 to 12:15 UTC, most names in the ripe.net zone were bogus due to expired DNSSEC signatures being served. This rendered most of the RIPE NCC’s services unreachable. After investigating the issue, we found a typo in a change to our zone where a record had a TTL that was longer (864,000 seconds instead of 86,400) than the refresh interval for RRSIGs (seven days). This caused our signer to stop refreshing signatures and only sign changes to the zone. We are talking to the vendor of our DNSSEC signing solution about this case to see what can be improved on that end, have implemented a pre-commit check to prevent TTLs longer than a day in the ripe.net zone and are looking at improving monitoring for stale signatures to spot issues like this before they cause problems. Impact DNSSEC signatures in the ripe.net zone are valid for 14 days, with our signers configured to resign them after half that time (seven days). On 1 November at 10:45 UTC the signature on several records in the ripe.net zone expired. These records had last been signed on 18 October and were due to be re-signed on the 25th. However, due to a problem with the TTL on one record, our signer stopped re-signing records in the zone on 25 October. This resulted in the expiry of 11,026 out of 11,389 records on 1 November. New or changed records were still properly signed (363 of them), which meant that our monitoring, which checks the signature validity of the SOA record at the zone apex, missed this issue. Because our internal resolvers are configured for DNSSEC validation, the impact was rather immediate for staff, as many internal services broke due to this issue. After first dismissing some alternative causes, we quickly found the problem was with expired signatures in the ripe.net zone, so we turned our attention to our signers. At the same time, we temporarily disabled DNSSEC validation on our internal resolvers so we could more easily access our own systems while troubleshooting. Resolution While debugging, we found that the rrsig-refresh option that we configured to seven days (half the value of the rrsig-lifetime option of 14 days) was likely involved, logs showed: info: [ripe.net.] DNSSEC, signing zone error: [ripe.net.] DNSSEC, rrsig-refresh too low to prevent expired RRSIGs in resolver caches info: [ripe.net.] DNSSEC, next signing at 2023-10-25T10:02:02+0000 error: [ripe.net.] zone event 're-sign' failed (invalid parameter) At 12:14 UTC we removed that option from our configuration and we could sign the zone again. The freshly signed zone was pushed out and went live a little bit later, which meant that at 12:15 UTC our services were available again for most users. Unfortunately, some users kept seeing problems for several hours after we restored the signatures. Root cause After further investigation we found that the change that triggered this problem introduced a record in the ripe.net zone with a TTL of 864,000 (ten days). Because this TTL is longer than our rrsig-refresh configuration, this could lead to cases where a resolver’s cache contains the record with an expired signature. The signer software rightfully complained about this. We were surprised to find it then stopped refreshing signatures for all records in the zone that didn’t change. Future steps During the incident and the aftermath we identified a few changes that we want to make to improve the resiliency of our setup and allow us to find cases like these before they become problems. Our current RRSIG freshness monitoring did not catch this case, because the records we monitor still had valid and recent signatures, so we are considering what we can do to cover this situation. We have also improved our zone-editing pipeline to catch typos or misconfigurations for TTL values. Next to that, the problem also affected our ability to communicate internally, as our internal chat system was unresolvable too. We have some means of out-of-band communication, but will review how we can improve that. Additionally, while the status.ripe.net website is hosted on separate infrastructure, the fact that it is also in the ripe.net domain meant that it was just as unreachable as our other services. We will evaluate this approach and see how we can improve on it. Timeline (times in UTC) 25 October 08:52 a record was added to the ripe.net zone with a TTL of 10 days 08:53 knot incrementally signs ripe.net successfully 09:02 knot fails to sign the ripe.net zone for the first time 1 November 10:45 ripe.net signatures expire and many records go bogus 11:27 DNSSEC validation on internal resolvers was disabled 12:14 changed configuration and manually re-signed zone 12:15 ripe.net zone has new valid signatures 12:38 DNSSEC validation on internal resolvers is re-enabled 2 November 08:39 typo in TTL fixed, bringing it back to 86,400 seconds as intended 08:39 added check in pipeline to detect too large TTL values

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NET zone operational announcement: DNSSEC algorithm rollover
by Wessels, Duane 31 Oct '23

31 Oct '23

Verisign will soon begin the transition to DNSSEC algorithm 13 (ECDSA) for the NET zone. Over the next few days, algorithm 13 signatures will start to appear in the zone, followed by the algorithm 13 DNSKEY records. We expect the DS record for the NET zone to change from algorithm 8 to algorithm 13 on or around November 8th. Additional information can be found at our blog post and DNS-OARC presentation URLs below: https://blog.verisign.com/security/dnssec-algorithm-update/ https://indico.dns-oarc.net/event/47/contributions/1012/ We expect no operational impacts for end users, but please feel free to reach out to us with concerns or any observations of anomalous behavior related to this algorithm rollover. DW

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DNS and K-root Quarterly Planning Q4 2023
by Paul de Weerd 28 Sep '23

28 Sep '23

Dear colleagues, The DNS Services quarterly plans, including K-root, are published on our website: https://www.ripe.net/support/documentation/quarterly-planning/dns-and-k-root In this quarter, we'll continue with our day-to-day operations and update the operating system of some of our DNS servers. We also plan on deploying a new AuthDNS core site in Asia. We hope that by providing these plans, we can better inform the community of the ongoing developments on the DNS services we operate and get feedback on our work. If you have any input on these plans or suggestions for future work, please reach out to us. Kind regards, Paul de Weerd RIPE NCC

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Reminder: RIPE NCC Open House Event on Community Projects Fund Updates - 27 September, 10:00 - 11:30 UTC
by Alastair Strachan 25 Sep '23

25 Sep '23

Dear colleagues, I hope all is well with you. Just a quick note to remind you about the RIPE NCC Open House event happening on Wednesday, 27th September, from 10:00 to 11:30 UTC. It's an excellent chance to hear firsthand updates from the recipients of last year’s Community Projects Fund and to engage in meaningful dialogue with project leaders. The agenda includes presentations where each project will provide an overview of their journey and accomplishments so far. Following the presentations, there will be a Q&A segment for any questions you may have. The projects and speakers lined up for the event are: 1. iNGO European Media Platform Project: Internet Identifiers in Time of War Speaker: Oksana Prykhodko 2. Aristotle University of Thessaloniki Project: AI4NetMon 2.0 Speaker: Pavlos Sermpezis 3. deSEC e.V. Project: deSEC: Secure DNSSEC Hosting Speaker: Peter Thomassen For more details and to register for the event, please visit the following link: https://www.ripe.net/participate/meetings/open-house/ripe-ncc-open-house-se… We hope to see you there! Kind Regards, Alastair Strachan RIPE NCC

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Reminder: Tomorrow's RIPE NCC Open House Event on Community Projects Fund Updates - 21 September, 10:00 - 11:30 UTC
by Alastair Strachan 20 Sep '23

20 Sep '23

Dear colleagues, I hope all is well with you. Just a quick note to remind you about the RIPE NCC Open House event happening tomorrow, Thursday, 21 September 2023, from 10:00 to 11:30 UTC. It's an excellent chance to hear firsthand updates from the recipients of last year’s Community Projects Fund and to engage in meaningful dialogue with project leaders. The agenda includes presentations where each project will provide an overview of their journey and accomplishments so far. Following the presentations, there will be a Q&A segment for any questions you may have. The projects and speakers lined up for tomorrow are: 1. Foundation for Research and Technology - Hellas (FORTH) Project: ARTEMIS Lite Speaker: George Nomikos 2. Grenoble Alps University Project: fpdns2: DNS Fingerprinting Tool Speaker: Yevheniya Nosyk 3. University of Aberdeen Project: Can We Extend IPv6? - A Measurement Project Speaker: Ana Custura For more details and to register for the event, please visit the following link: https://www.ripe.net/participate/meetings/open-house/ripe-ncc-open-house-se… https://www.ripe.net/participate/meetings/open-house/ripe-ncc-open-house-se… We hope to see you there! Kind Regards, Alastair Strachan RIPE NCC

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