Host * !github.com
Port 516
Host abc
Port 2222
Match host xyz canonical
Port 2223
Host *
ForwardAgent no
AddKeysToAgent no
Compression no
ServerAliveInterval 0
ServerAliveCountMax 3
HashKnownHosts no
UserKnownHostsFile ~/.ssh/known_hosts
ControlMaster no
ControlPath ~/.ssh/master-%r@%n:%p
ControlPersist no