krb5_fwd_tgt_creds
if (status = krb5_fwd_tgt_creds(bsd_context, auth_context,
retval = krb5_fwd_tgt_creds(telnet_context, auth_context, 0, client,
code = krb5_fwd_tgt_creds(context, auth_context, 0,
krb5_error_code KRB5_CALLCONV krb5_fwd_tgt_creds