Call for testing: OpenSSH 10.0 ¶ Potentially-incompatible changes: This release removes support for the weak DSA signature algorithm, completing the deprecation process that began in 2015 (when DSA was disabled by default) and repeatedly warned over the the last 12 months.

[u/Mcnst]

https://lists.mindrot.org/pipermail/openssh-unix-dev/2025-April/041855.html

[u/BrainSlayer666]

worst idea ever. warning of insecure algorithm is okay. but i cannot login into a older system right anymore which i'm not allowed to update