[Bug 1961833] Re: openssh 8.8 breaks login to Canonical servers

[Colin Watson]

Also, regarding the "without a deprecation notice" claim, this has been
advertised under "Future deprecation notice" in the OpenSSH release
notes since 8.2.

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https://bugs.launchpad.net/bugs/1961833

Title:
  openssh 8.8 breaks login to Canonical servers

Status in openssh package in Ubuntu:
  Won't Fix

Bug description:
  With 8.7p1-4 connecting to wendigo

  debug1: Next authentication method: publickey
  debug1: Offering public key: /home/jak/.ssh/id_rsa RSA SHA256:Dj1/l9g5RH00/wO7puC1WVxgpvmhmaQg3wEETwmOFPk agent
  debug1: Server accepts key: /home/jak/.ssh/id_rsa RSA SHA256:Dj1/l9g5RH00/wO7puC1WVxgpvmhmaQg3wEETwmOFPk agent

  With 8.8p1-1

  debug1: Offering public key: /home/jak/.ssh/id_rsa RSA SHA256:Dj1/l9g5RH00/wO7puC1WVxgpvmhmaQg3wEETwmOFPk agent                                                                                                                                                                             
  debug1: send_pubkey_test: no mutual signature algorithm   

  
  Needs further investigation, but blocks people a bit right now

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