%DIRECTIVES = (
    BindAddress             => [ \&_set_str, 'bind_address' ],
    Host                    => [ \&_host ],
    BatchMode               => [ \&_batch_mode ],
    ChallengeResponseAuthentication => [ \&_set_yesno, 'auth_ch_res' ],
    Cipher                  => [ \&_cipher ],
    Ciphers                 => [ \&_set_str, 'ciphers' ],
    Compression             => [ \&_set_yesno, 'compression' ],
    CompressionLevel        => [ \&_set_str, 'compression_level' ],
    DSAAuthentication       => [ \&_set_yesno, 'auth_dsa' ],
    GlobalKnownHostsFile    => [ \&_set_str, 'global_known_hosts' ],
    HostKeyAlgorithms       => [ \&_set_str, 'host_key_algorithms' ],
    HostName                => [ \&_set_str, 'hostname' ],
    IdentityFile            => [ \&_identity_file ],
    NumberOfPasswordPrompts => [ \&_set_str, 'number_of_password_prompts' ],
    PasswordAuthentication  => [ \&_set_yesno, 'auth_password' ],
    PasswordPromptHost      => [ \&_set_yesno, 'password_prompt_host' ],
    PasswordPromptLogin     => [ \&_set_yesno, 'password_prompt_login' ],
    Port                    => [ \&_set_str, 'port' ],
    Protocol                => [ \&_protocol ],
    RhostsAuthentication    => [ \&_set_yesno, 'auth_rhosts' ],
    RhostsRSAAuthentication => [ \&_set_yesno, 'auth_rhosts_rsa' ],
    RSAAuthentication       => [ \&_set_yesno, 'auth_rsa' ],
    UsePrivilegedPort       => [ \&_set_yesno, 'privileged' ],
    User                    => [ \&_set_str, 'user' ],
    UserKnownHostsFile      => [ \&_set_str, 'user_known_hosts' ],
);