svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.
dhcp_inittab(5)
dhcp_inittab(5) File Formats dhcp_inittab(5)
NAME
dhcp_inittab - information repository for DHCP options
DESCRIPTION
The /etc/dhcp/inittab and the /etc/dhcp/inittab6 files contain informa‐
tion about the Dynamic Host Configuration Protocol (DHCP) options,
which are network configuration parameters passed from DHCP servers to
DHCP clients when a client machine uses DHCP. Since many DHCP-related
commands must parse and understand these DHCP options, this file serves
as a central location where information about these options may be ob‐
tained.
The DHCP inittab and inittab6 files provide three general pieces of
information:
o A mnemonic alias, or symbol name, for each option number.
For instance, option 12 is aliased to the name Hostname.
This is useful for DHCP-related programs that require human
interaction, such as dhcpinfo(1).
o Information about the syntax for each option. This includes
information such as the type of the value, for example,
whether it is a 16-bit integer or an IP address.
o The policy for what options are visible to which DHCP-re‐
lated programs.
If you make any changes to the /etc/dhcp/inittab file, note that only
additions of or changes to SITE options are preserved during upgrade.
For /etc/dhcp/inittab6, no options are preserved during upgrade.
The VENDOR options defined here are intended for use by the Solaris
DHCP client and DHCP management tools. The SUNW vendor space is owned
by Sun, and changes are likely during upgrade. If you need to configure
the Solaris DHCP server to support the vendor options of a different
client, see dhcptab for details.
Each DHCP option belongs to a certain category, which roughly defines
the scope of the option; for instance, an option may only be understood
by certain hosts within a given site, or it may be globally understood
by all DHCP clients and servers. The following categories are defined;
the category names are not case-sensitive:
STANDARD All client and server DHCP implementations agree on the se‐
mantics. These are administered by the Internet Assigned
Numbers Authority (IANA). These options are numbered from 1
to 127 for IPv4 DHCP, and 1 to 65535 for DHCPv6.
SITE Within a specific site, all client and server implementa‐
tions agree on the semantics. However, at another site the
type and meaning of the option may be quite different.
These options are numbered from 128 to 254 for IPv4 DHCP.
DHCPv6 does not support site options.
VENDOR Each vendor may define 254 options (65536 for DHCPv6)
unique to that vendor. The vendor is identified within a
DHCP packet by the "Vendor Class" option, number 60 (number
17 for DHCPv6). An option with a specific numeric identi‐
fier belonging to one vendor will, in general, have a type
and semantics different from that of a different vendor.
Vendor options are "super-encapsulated" into the vendor
field number 43, as defined in RFC 2132 for IPv4 DHCP, and
number 17 as defined in RFC 3315 for DHCPv6. The
/etc/dhcp/inittab file contains only Sun vendor options.
Define non-Sun vendor options in the dhcptab file.
FIELD This category allows the fixed fields within a DHCP packet
to be aliased to a mnemonic name for use with dhcpinfo(1).
INTERNAL This category is internal to the Solaris DHCP implementa‐
tion and will not be further defined.
DHCP inittab and inittab6 Format
Data entries are written one per line and have seven fields; each entry
provides information for one option. Each field is separated by a
comma, except for the first and second, which are separated by white‐
space (as defined in isspace(3C)). An entry cannot be continued onto
another line. Blank lines and those whose first non-whitespace charac‐
ter is '#' are ignored.
The fields, in order, are:
o Mnemonic Identifier
The Mnemonic Identifier is a user-friendly alias for the op‐
tion number; it is not case sensitive. This field must be
per-category unique and should be unique across all cate‐
gories. The option names in the STANDARD, SITE, and VENDOR
spaces should not overlap, or the behavior will be unde‐
fined. See Mnemonic Identifiers for Options section of this
man page for descriptions of the option names.
o Category (scope)
The Category field is one of STANDARD, SITE, VENDOR, FIELD,
or INTERNAL and identifies the scope in which the option
falls. SITE is not used in inittab6.
o Option Number
The Option Number is the number of this option when it is in
a DHCP packet. This field should be per-category unique and
the STANDARD and SITE fields should not have overlapping
code fields or the behavior is undefined.
o Data Type
Data Type is one of the following values, which are not case
sensitive:
ASCII A printable character string
Bool Has no value. Scope limited to category limited
to INTERNAL. Presence of an option of this type
within a Solaris configuration file represents
TRUE, absence represents FALSE.
Octet An array of bytes
Unumber8 An 8-bit unsigned integer
Snumber8 An 8-bit signed integer
Unumber16 A 16-bit unsigned integer
Snumber16 A 16-bit signed integer
Unumber24 A 24-bit unsigned integer
Unumber32 A 32-bit unsigned integer
Snumber32 A 32-bit signed integer
Unumber64 A 64-bit unsigned integer
Snumber64 A 64-bit signed integer
Ip An IPv4 address
Ipv6 An IPv6 address
Duid An RFC 3315 Unique Identifier
Domain An RFC 1035-encoded domain name
FQDN An RFC 1035-compressed list of fully qualified
domain names
The data type field describes an indivisible unit of the option
payload, using one of the values listed above.
o Granularity
The Granularity field describes how many indivisible units
in the option payload make up a whole value or item for this
option. The value must be greater than zero (0) for any data
type other than Bool, in which case it must be zero (0).
o Maximum Number Of Items
This value specifies the maximum items of Granularity which
are permissible in a definition using this symbol. For exam‐
ple, there can only be one IP address specified for a subnet
mask, so the Maximum number of items in this case is one
(1). A Maximum value of zero (0) means that a variable num‐
ber of items is permitted.
o Visibility
The Visibility field specifies which DHCP-related programs
make use of this information, and should always be defined
as sdmi for newly added options.
Mnemonic Identifiers for IPv4 Options
The following table maps the mnemonic identifiers used in Solaris DHCP
to RFC 2132 and RFC 3442 options:
tab(); lw(1.4i) lw(1.09i) lw(3.01i) lw(1.4i) lw(1.09i) lw(3.01i) Sym‐
bolCodeDescription _ Subnet1T{ Subnet Mask, dotted Internet address
(IP). T} UTCoffst2T{ Coordinated Universal time offset (seconds). T}
Router3 *List of Routers, IP. Timeserv4List of RFC-868 servers, IP.
IEN116ns5List of IEN 116 name servers, IP. DNSserv6List of DNS name
servers, IP. Logserv7List of MIT-LCS UDP log servers, IP. Cookie8List
of RFC-865 cookie servers, IP. Lprserv9T{ List of RFC-1179 line
printer servers, IP. T} Impress10List of Imagen Impress servers, IP.
Resource11T{ List of RFC-887 resource location servers, IP. T} Host‐
name12T{ Client's hostname, value from hosts database. T} Bootsize13T{
Number of 512 octet blocks in boot image, NUMBER. T} Dumpfile14T{ Path
where core image should be dumped, ASCII. T} DNSdmain15DNS domain
name, ASCII. Swapserv16Client's swap server, IP. Rootpath17Client's
Root path, ASCII. ExtendP18Extensions path, ASCII. IpFwdF19IP For‐
warding Enable/Disable, NUMBER. NLrouteF20Non-local Source Routing,
NUMBER. PFilter21Policy Filter, IP. MaxIpSiz22T{ Maximum datagram Re‐
assembly Size, NUMBER. T} IpTTL23T{ Default IP Time to Live,
(1=<x<=255), NUMBER. T} PathTO24RFC-1191 Path MTU Aging Timeout, NUM‐
BER. PathTbl25RFC-1191 Path MTU Plateau Table, NUMBER. MTU26Interface
MTU, x>=68, NUMBER. SameMtuF27All Subnets are Local, NUMBER. Broad‐
cst28Broadcast Address, IP. MaskDscF29Perform Mask Discovery, NUMBER.
MaskSupF30Mask Supplier, NUMBER. RDiscvyF31Perform Router Discovery,
NUMBER. RSolictS32Router Solicitation Address, IP. StaticRt33T{ Sta‐
tic Route, Double IP (network router). T} TrailerF34Trailer Encapsula‐
tion, NUMBER. ArpTimeO35ARP Cache Time out, NUMBER. EthEncap36Ether‐
net Encapsulation, NUMBER. TcpTTL37TCP Default Time to Live, NUMBER.
TcpKaInt38TCP Keepalive Interval, NUMBER. TcpKaGbF39TCP Keepalive
Garbage, NUMBER. NISdmain40NIS Domain name, ASCII. NISservs41List of
NIS servers, IP. NTPservs42List of NTP servers, IP. NetBNms44List of
NetBIOS Name servers, IP. NetBDsts45T{ List of NetBIOS Distribution
servers, IP. T} NetBNdT46T{ NetBIOS Node type (1=B-node, 2=P, 4=M,
8=H). T} NetBScop47NetBIOS scope, ASCII. XFontSrv48List of X Window
Font servers, IP. XDispMgr49List of X Window Display managers, IP.
LeaseTim51Lease Time Policy, (-1 = PERM), NUMBER. Message56T{ Message
to be displayed on client, ASCII. T} T1Time58Renewal (T1) time, NUM‐
BER. T2Time59Rebinding (T2) time, NUMBER. NW_dmain62NetWare/IP Domain
Name, ASCII. NWIPOpts63T{ NetWare/IP Options, OCTET (unknown type).
T} TFTPsrvN66TFTP server hostname, ASCII. OptBootF67Optional Bootfile
path, ASCII. MblIPAgt68Mobile IP Home Agent, IP. SMTPserv69T{ Simple
Mail Transport Protocol Server, IP. T} POP3serv70Post Office Protocol
(POP3) Server, IP. NNTPserv71T{ Network News Transport Proto. (NNTP)
Server, IP. T} WWWservs72Default WorldWideWeb Server, IP. Fin‐
gersv73Default Finger Server, IP. IRCservs74Internet Relay Chat
Server, IP. STservs75StreetTalk Server, IP. STDAservs76StreetTalk Di‐
rectory Assist. Server, IP. UserClas77User class information, ASCII.
SLP_DA78Directory agent, OCTET. SLP_SS79Service scope, OCTET. Agen‐
tOpt82Agent circuit ID, OCTET. FQDN89Fully Qualified Domain Name,
OCTET. PXEarch93Client system architecture, NUMBER. DNSDomSearch119T{
List of FQDN to populate DNS Search, FQDN. T} ClasslessRt121 *T{ List
of Classless Static Routes, CLROUTE. T} BootFileN/AFile to Boot,
ASCII. BootPathN/AT{ Boot path prefix to apply to client's requested
boot file, ASCII. T} BootSrvAN/ABoot Server, IP. BootSrvNN/ABoot
Server Hostname, ASCII. EchoVCN/AT{ Echo Vendor Class Identifier Flag,
(Present=TRUE) T} LeaseNegN/ALease is Negotiable Flag, (Present=TRUE)
Note -
As per RFC 3442, if the DHCP server returns both a Classless Static
Route option and a Router option, the Solaris DHCP client ignores the
Router option. Affected options are indicated with a '*' in the above
table.
Mnemonic Identifiers for IPv6 Options
The following table maps the mnemonic identifiers used in Solaris DHCP
to RFC 3315, 3319, 3646, 3898, 4075, and 4280 options:
tab(); lw(1.4i) lw(1.09i) lw(3.01i) lw(1.4i) lw(1.09i) lw(3.01i) Sym‐
bolCodeDescription _ ClientID1Unique identifier for client, DUID
ServerID2Unique identifier for server, DUID Preference7Server prefer‐
ence, NUMBER Unicast12Unicast server address, IPV6 UserClass15User
classes for client, OCTET VendorClass16Vendor client hardware items,
OCTET SIPNames21SIP proxy server name list, DOMAIN SIPAddresses22T{ SIP
proxy server addresses in preference order, IPV6 T} DNSAddresses23T{
DNS server addresses in preference order, IPV6 T} DNSSearch24DNS search
list, DOMAIN NISServers27T{ NIS server addresses in preference order,
IPV6 T} NISDomain29NIS domain name, DOMAIN SNTPServers31IPV6 InfoRe‐
fresh32UNUMBER32 BCMCDomain33T{ Broadcast/multicast control server name
list, DOMAIN T} BCMCAddresses34T{ Broadcast/multicast control server
addresses, IPV6 T}
EXAMPLES
Example 1 Altering the DHCP inittab File
In general, the DHCP inittab file should only be altered to add SITE
options. If other options are added, they will not be automatically
carried forward when the system is upgraded. For instance:
ipPairs SITE, 132, IP, 2, 0, sdmi
describes an option named ipPairs, that is in the SITE category. That
is, it is defined by each individual site, and is option code 132,
which is of type IP Address, consisting of a potentially infinite num‐
ber of pairs of IP addresses.
FILES
/etc/dhcp/inittab
/etc/dhcp/inittabv6
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Availabilitysystem/network _ Interface StabilityCommit‐
ted
SEE ALSO
dhcpinfo(1), isspace(3C), attributes(7), dhcp(7), dhcpagent(8)
Alexander, S., and R. Droms. RFC 2132, DHCP Options and BOOTP Vendor
Extensions. Network Working Group. March 1997.
Droms, R. RFC 2131, Dynamic Host Configuration Protocol. Network Work‐
ing Group. March 1997.
Droms, R. RFC 3315, Dynamic Host Configuration Protocol for IPv6
(DHCPv6). Cisco Systems. July 2003.
Schulzrinne, H., and B. Volz. RFC 3319, Dynamic Host Configuration Pro‐
tocol (DHCPv6) Options for Session Initiation Protocol (SIP) Servers.
Columbia University and Ericsson. July 2003.
Lemon, T., and S. Cheshire. RFC 3396, Encoding Long Options in the Dy‐
namic Host Configuration Protocol (DHCPv4). Network Working Group. No‐
vember 2002.
Lemon, T., S. Cheshire, and B. Volz. RFC 3442, The Classless Static
Route Option for Dynamic Host Configuration Protocol (DHCP) version 4.
Network Working Group. December 2002.
Droms, R. RFC 3646, DNS Configuration options for Dynamic Host Configu‐
ration Protocol for IPv6 (DHCPv6). Cisco Systems. December 2003.
Kalusivalingam, V. RFC 3898, Network Information Service (NIS) Configu‐
ration Options for Dynamic Host Configuration Protocol for IPv6
(DHCPv6). Cisco Systems. October 2004.
Chowdhury, K., P. Yegani, and L. Madour. RFC 4280, Dynamic Host Config‐
uration Protocol (DHCP) Options for Broadcast and Multicast Control
Servers. Starent Networks, Cisco Systems, and Ericsson. November 2005.
Mockapetris, P.V. RFC 1035, Domain names - implementation and specifi‐
cation. ISI. November 1987.
HISTORY
The /etc/dhcp/inittab file was added to Solaris in the Solaris 8 re‐
lease. The /etc/dhcp/inittab6 file was added to Solaris in the Solaris
10 8/07 (Update 4) release.
The following options are present in these files in Oracle Solaris
starting with the listed release:
tab() box; cw(3.44i) |cw(2.06i) lw(3.44i) |lw(2.06i) OPTIONRELEASE _
DNSDomSearch (IPv4) 11.4.63 _ ClasslessRt (IPv4) 11.3.20, Solaris 10
patch _ DHCPv6 options 10 8/07 (Update 4) _ SbootURI, SHTTPproxy 9
12/03 (Update 5) _ all other IPv4 options 8
Oracle Solaris 11.4 14 Dec 2023 dhcp_inittab(5)