question: private boolean useDNS ( String name , boolean defaultValue ) { Boolean value = getBooleanObject ( "libdefaults" , name ) ; if ( value != null ) { return value . booleanValue ( ) ; } value = getBooleanObject ( "libdefaults" , "dns_fallback" ) ; if ( value != null ) { return value . booleanValue ( ) ; } return defaultValue ; }
target:  Check if need to use DNS to locate Kerberos services