Installing and Administering Internet Services

108 Chapter3
Configuring and Administering the BIND Name Service
Configuring a Primary Master Name Server
included in the file /usr/examples/bind/db.cache.arpa.
Following is an example db.cache file for a primary master server:
;
; This file holds the information on root name servers needed
; to initialize cache of Internet domain name servers
;
; last update: May 11, 1994
; related version of root zone: 940516
;
; name ttl class type data
;
. 99999999 IN NS NS.INTERNIC.NET.
NS.INTERNIC.NET. 99999999 A 198.41.0.4
. 99999999 NS NS1.ISI.EDU.
NS1.ISI.EDU. 99999999 A 128.9.0.107
. 99999999 NS C.NYSER.NET.
C.NYSER.NET. 99999999 A 192.33.4.12
. 99999999 NS TERP.UMD.EDU.
TERP.UMD.EDU. 99999999 A 128.8.10.90
. 99999999 NS NS.NASA.GOV.
NS.NASA.GOV. 99999999 A 128.102.16.10
99999999 A 192.52.195.10
. 99999999 NS NS.NIC.DDN.MIL.
NS.NIC.DDN.MIL. 99999999 A 192.112.36.4
. 99999999 NS AOS.ARL.ARMY.MIL.
AOS.ARL.ARMY.MIL. 99999999 A 128.63.4.82
99999999 A 192.5.25.82
. 99999999 NS NIC.NORDU.NET.
NIC.NORDU.NET. 99999999 A 192.36.148.17
; Lines beginning with a semicolon (;) are comments.
name In NS records, the name of the domain served by the
name server listed in the data column. A period (.) in
the name column represents the root domain (the root
of the DNS name space hierarchy). In A records, the
name column contains the name of the name server
whose address appears in the data column.
ttl The optional time-to-live (ttl) indicates how long, in
seconds, a server may cache the data it receives in
response to a query.
class The optional class field specifies the protocol group.
IN, for internet addresses, is the most common class. If