Background

With proServer 2.0 ("IPv6-only"), multiplexing the SSH connection via the jump host may not work reliably. This can be resolved by using a special SSH configuration for Ansible.

Enable a custom SSH configuration in ansible.cfg

[ssh_connection]
ssh_args = -F custom_ssh_config

Set the correct settings in ` custom_ssh_config `

Host ssh-jumphost.karlsruhe.punkt.de
   User jumping
  ForwardAgent yes
  ControlMaster auto
  ControlPersist 10m
  ControlPath ~/.ansible/cp/%C

Host *.proserver.punkt.de
   ProxyJump ssh-jumphost.karlsruhe.punkt.de
   ForwardAgent yes
  ControlMaster auto
  ControlPersist 1m
  ControlPath ~/.ansible/cp/%C

We would like to extend our sincere thanks to our client, gesagt.getan. GmbH, for this guide.