--- dhcp_inittab.4.orig Thu Oct 26 11:59:51 2006 +++ dhcp_inittab.4.new Thu Oct 26 17:01:39 2006 @@ -9,7 +9,8 @@ dhcp_inittab - information repository for DHCP options DESCRIPTION - The /etc/dhcp/inittab file contains information about the + The /etc/dhcp/inittab and /etc/dhcp/inittabv6 files contain + information 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. @@ -17,8 +18,8 @@ these DHCP options, this file serves as a central location where information about these options may be obtained. - The DHCP inittab file provides three general pieces of - information: + The DHCP inittab and inittabv6 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 @@ -56,7 +57,8 @@ agree on the semantics. These are admin- istered by the Internet Assigned Numbers Authority (IANA). These options are numbered - from 1 to 127. + from 1 to 127 for IPv4 DHCP, and 1 to 65535 + for DHCPv6. @@ -76,20 +78,25 @@ tics. However, at another site the type and meaning of the option may be quite dif- ferent. These options are numbered from 128 - to 254. + to 254 for IPv4 DHCP. DHCPv6 does not + support site options. - VENDOR Each vendor may define 254 options unique to + 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. An option with a specific numeric + number 60 (number 17 for DHCPv6). + An option with a specific numeric identifier 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. The dhcp_inittab file only contains + 2132 for IPv4 DHCP, and number 17 as defined + in RFC 3315 for DHCPv6. The dhcp_inittab + file only contains Sun vendor options. Define non-Sun vendor options in the dhcptab file. @@ -107,7 +114,7 @@ - DHCP inittab Format + DHCP inittab And inittabv6 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, @@ -147,7 +154,7 @@ The Category field is one of STANDARD, SITE, VENDOR, FIELD, or INTERNAL and identifies the scope in which - the option falls. + the option falls. SITE is not used in inittabv6. o Option Number @@ -207,6 +214,10 @@ + Unumber24 A 24-bit unsigned integer + + + Unumber32 A 32-bit unsigned integer @@ -223,9 +234,21 @@ - Ip An IP address + Ip An IPv4 address + + Ipv6 An IPv6 address + + + + Duid An RFC 3315 Unique Identifier + + + + Domain An RFC 1035-encoded domain name + + The data type field describes an indivisible unit of the option payload, using one of the values listed above. @@ -269,7 +292,7 @@ - Mnemonic Identifiers for Options + Mnemonic Identifiers for IPv4 Options The following table maps the mnemonic identifiers used in Solaris DHCP to RFC 2132 options: @@ -386,7 +409,6 @@ SLP_SS 79 Service scope, OCTET. AgentOpt 82 Agent circuit ID, OCTET. FQDN 89 Fully Qualified Domain Name, OCTET. - PXEarch 93 Client system architecture, NUMBER. @@ -401,10 +423,6 @@ - PXEnii 94 Client Network Device Interface, - OCTET. - PXEcid 97 UUID/GUID-based client indentifier, - OCTET. BootFile N/A File to Boot, ASCII. BootPath N/A Boot path prefix to apply to client's requested boot file, @@ -415,10 +433,45 @@ (Present=TRUE) LeaseNeg N/A Lease is Negotiable Flag, (Present=TRUE) - Include N/A Include listed macro values in this - macro. + 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: + Symbol Code Description + + ClientID 1 Unique identifier for client, + DUID + ServerID 2 Unique identifier for server, + DUID + Preference 7 Server preference, NUMBER + Unicast 12 Unicast server address, IPV6 + UserClass 15 User classes for client, OCTET + VendorClass 16 Vendor client hardware items, + OCTET + SIPNames 21 SIP proxy server name list, + DOMAIN + SIPAddresses 22 SIP proxy server addresses in + preference order, IPV6 + DNSAddresses 23 DNS server addresses in + preference order, IPV6 + DNSSearch 24 DNS search list, DOMAIN + NISServers 27 NIS server addresses in + preference order, IPV6 + NIS+Servers 28 NIS+ server addresses in + preference order, IPV6 + NISDomain 29 NIS domain name, DOMAIN + NIS+Domain 30 NIS+ domain name, DOMAIN + SNTPServers 31 IPV6 + InfoRefresh 32 UNUMBER32 + BCMCDomain 33 Broadcast/multicast control + server name list, DOMAIN + BCMCAddresses 34 Broadcast/multicast control + server addresses, IPV6 + + + EXAMPLES Example 1: Altering the DHCP inittab File @@ -438,6 +491,7 @@ FILES /etc/dhcp/inittab + /etc/dhcp/inittabv6 ATTRIBUTES See attributes(5) for descriptions of the following attri- @@ -448,7 +502,7 @@ |_____________________________|_____________________________| | Availability | SUNWcsr | |_____________________________|_____________________________| - | Interface Stability | Evolving | + | Interface Stability | Committed | |_____________________________|_____________________________| @@ -479,8 +533,35 @@ Droms, R. RFC 2131, Dynamic Host Configuration Protocol. Network Working 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 Protocol (DHCPv6) Options for Session + Initiation Protocol (SIP) Servers. Columbia University and + Ericsson. July 2003. + Droms, R. RFC 3646, DNS Configuration options for Dynamic + Host Configuration Protocol for IPv6 (DHCPv6). Cisco + Systems. December 2003. + + Kalusivalingam, V. RFC 3898, Network Information Service + (NIS) Configuration Options for Dynamic Host Configuration + Protocol for IPv6 (DHCPv6). Cisco Systems. October 2004. + + Kalusivalingam, V. RFC 4075, Simple Network Time Protocol + (SNTP) Configuration Option for DHCPv6. Cisco Systems. May + 2005. + + Chowdhury, K., P. Yegani, and L. Madour. RFC 4280, Dynamic + Host Configuration 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 specification. ISI. November 1987. + +