3.1.5.2 mechTypes Identification of Kerberos
An implementation SHOULD<9> use the standard Kerberos OID (1.2.840.113554.1.2.2), as described in [RFC4120], for identification of the Kerberos mechType and the OID described in [UUKA-GSSAPI] section 4 for identification of the Kerberos user-to-user mechType.