This bug was fixed in the package systemd - 249.11-0ubuntu3.23
---------------
systemd (249.11-0ubuntu3.23) jammy-security; urgency=medium
* d/p/lp2170538-resolved-pick-up-new-DNSSEC-KSK-from-2024.patch: add
the root zone KSK-2024 (key tag 38696) to the built-in DNSSEC trust
anchor. Since 2026-10-11 the root DNSKEY RRset is signed only by
this key, so with DNSSEC enabled and no local trust anchor file
every lookup failed with "missing-key" (LP: #2170538)
-- CyberNative AI LLC <[email protected]> Mon, 12 Oct 2026 07:44:55
+0000
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https://bugs.launchpad.net/bugs/2170538
Title:
Ubuntu 24.04: systemd-resolved DNSSEC fails after root KSK rollover;
built-in trust anchor lacks key 38696
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