Host bastion
    Port 22
    User root

Match Host *.prod.example.com
    Port 2222
    User deploy
    IdentityFile ~/.ssh/prod_key1
    IdentityFile ~/.ssh/prod_key2

Host *.example.com
    Port 80
    User webuser

Match Host *.staging.example.com
    Port 3333
    User staging

Match all
    User fallback
    IdentityFile ~/.ssh/default_key
