Host localhost 127.0.0.1 # A comment at the end of a host line.
  NoHostAuthenticationForLocalhost yes

# A comment
    # A comment with leading spaces.

Host wap
  User root
  KexAlgorithms diffie-hellman-group1-sha1

Host [some stuff behind a NAT]
  Compression yes
  ProxyCommand ssh -qW %h:%p [NATrouter]

Host wopr # there are 2 proxies available for this one...
  User root
  ProxyCommand sh -c "ssh proxy1 -qW %h:22 || ssh proxy2 -qW %h:22"

Host dhcp-??
  UserKnownHostsFile /dev/null
  StrictHostKeyChecking no
  User root

Host [my boxes] [*.mydomain]
  ForwardAgent yes
  ForwardX11 yes
  ForwardX11Trusted yes

Host *
  #ControlMaster auto
  #ControlPath /tmp/ssh-master-%C
  #ControlPath /tmp/ssh-%u-%r@%h:%p
  #ControlPersist yes
  ForwardX11Timeout 52w
  XAuthLocation /usr/bin/xauth
  SendEnv LANG LC_*
  HostKeyAlgorithms ssh-ed25519,ssh-rsa
  AddressFamily inet
  #UpdateHostKeys ask