Please send comments to the authors. Such information includes the location of Kerberos key dis- tribution centers or a mapping between DNS domains and Kerberos realms. Current Kerberos implementations generally store such configuration information in a file on each client machine. In Kerberos, realm names are case sensitive. While it is strongly encouraged that all realm names be all upper case this recommendation has not been adopted by all sites.
Some sites use all lower case names and other use mixed case.
DNS on the other hand is case insen- sitive for queries but is case preserving for responses to TXT queries. The Realm is the Kerberos realm that this record corresponds to. TTL, Class, SRV, Priority, Weight, and Target have the standard mean- ing as defined in RFC 2052. Weights are not used in these records. The Realm is the Kerberos realm that this record corresponds to.