Dear Colleagues,
We are reaching out to inform you of important changes to the DNSSEC trust
anchor in the root zone. If you manage a validating DNS resolver or a tool that
interacts with the DNS root zone you might need to change your software to
handle the changes. This letter provides a summary of the upcoming changes and
gives pointers to resources that describe them in detail.
*Upcoming addition of the KSK-2024 trust anchor*
On January 11, 2025, a new trust anchor, codenamed KSK-2024, will appear in the
root zone for the global DNS. This key was generated earlier this year and will
co-exist with the current trust anchor, codenamed KSK-2017. The new DNSKEY
record is:
. 172800 IN DNSKEY 257 3 8
AwEAAa96jeuknZlaeSrvyAJj6ZHv28hhOKkx3rLGXVaC6rXTsDc449/c
idltpkyGwCJNnOAlFNKF2jBosZBU5eeHspaQWOmOElZsjICMQMC3aeHb
GiShvZsx4wMYSjH8e7Vrhbu6irwCzVBApESjbUdpWWmEnhathWu1jo+s
iFUiRAAxm9qyJNg/wOZqqzL/dL/q8PkcRU5oUKEpUge71M3ej2/7CPqp
dVwuMoTvoB+ZOT4YeGyxMvHmbrxlFzGOHOijtzN+u1TQNatX2XBuzZNQ
1K+s2CXkPIZo7s6JgZyvaBevYtxPvYLw4z9mR7K2vaF18UYH9Z9GNUUe
ayffKC73PYc=
As a result of this addition, some DNS responses may be larger during the
transition period. If your software uses the RFC 5011 process for managing
trust anchors, KSK-2024 will be automatically trusted about one month after its
introduction to the root zone. There are two important planned dates:
* October 11, 2026: KSK-2024 will begin signing the root zone.
* January 11, 2027: KSK-2017 is scheduled to be revoked.
For a detailed description of the rollover process, please refer to
https://www.iana.org/dnssec/files
*New trust anchor file*
IANA has issued a new trust anchor file using the updated XML format described
in https://datatracker.ietf.org/doc/draft-ietf-dnsop-rfc7958bis/ , which has
recently been approved to be published as an RFC. The new trust anchor file
contains additional data that was not provided in previous versions of the file.
If your software or processes use the IANA trust anchor file (published at
https://data.iana.org/root-anchors/root-anchors.xml ), you should ensure you
have processes to retrieve it regularly (such as weekly) and check your systems
can process the revised format of the file.
*Keep in touch*
Operational announcements regarding trust anchors and rollovers are published
on the root-dnssec-announce mailing list at
https://lists.icann.org/postorius/lists/root-dnssec-announce.icann.org/ . A
separate ksk-rollover mailing list is a forum for discussion specific to
rollovers can be found at
https://lists.icann.org/postorius/lists/ksk-rollover.icann.org/ .
Best regards,
--
Andres Pavez
Cryptographic Key Manager
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