Host alarm
  HostName 100.64.84.69
  User alarm
Host desk
  HostName 100.73.57.3
  User raph
Host blanc-nas
  HostName 100.91.19.107
  User raph
Host alarm desk blanc-nas
  IdentityFile /root/.ssh/id_ed25519
  IdentitiesOnly yes
  StrictHostKeyChecking yes
  UserKnownHostsFile /root/.ssh/known_hosts
  ConnectTimeout 8