Host remarkable 10.11.99.1
  User root
  HostName remarkable
  PubkeyAcceptedAlgorithms +ssh-rsa
  HostkeyAlgorithms +ssh-rsa

Host bletchley
  HostName bletchley.oxy.edu
  User nnovak

Host aur aur.archlinux.org
  User aur
  Hostname aur.archlinux.org
  IdentityFile ~/.ssh/keys/aur