OpenVision License
['https://github.com/krb5/krb5/blob/krb5-1.21.2-final/NOTICE#L66-L98', 'https://web.mit.edu/kerberos/krb5-1.21/doc/mitK5license.html', 'https://fedoraproject.org/wiki/Licensing:MIT#OpenVision_Variant']