*** dhcp-options.5	Sun Jan 13 15:42:13 2002
--- dhcp-options.5.new	Wed Jan 16 12:30:07 2002
***************
*** 138,145 ****
--- 138,155 ----
  such options by defining them in the configuration file.  Please see
  the DEFINING NEW OPTIONS heading later in this document for more
  information.
  .PP
+ Some of the options documented here are automatically generated by
+ the DHCP server or by clients, and cannot be configured by the user.
+ The value of such an option can be used in the configuration file of
+ the receiving DHCP protocol agent (server or client), for example in
+ conditional expressions. However, the value of the option cannot be
+ used in the configuration file of the sending agent, because the value
+ is determined only \fIafter\fR the configuration file has been
+ processed. In the following documentation, such options will be shown
+ as "not user configurable"
+ .PP
  The standard options are:
  .PP
  .B option \fBall-subnets-local\fR \fIflag\fR\fB;\fR
  .RS 0.25i
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*** 224,231 ****
--- 234,254 ----
  	option dhcp-client-identifier "foo";
  .fi
  .RE
  .PP
+ .B option \fBdhcp-lease-time\fR \fIuint32\fR\fB;\fR
+ .RS 0.25i
+ .PP
+ This option is used in a client request (DHCPDISCOVER or DHCPREQUEST)
+ to allow the client to request a lease time for the IP address.  In a
+ server reply (DHCPOFFER), a DHCP server uses this option to specify
+ the lease time it is willing to offer.                                    
+ .PP
+ This option is not directly user configurable in the server; refer to the
+ \fImax-lease-time\fR and \fidefault-lease-time\fR server options in
+ .B dhcpd.conf(5).
+ .RE
+ .PP
  .B option \fBdhcp-max-message-size\fR \fIuint16\fR\fB;\fR
  .RS 0.25i
  .PP
  This option, when sent by the client, specifies the maximum size of
***************
*** 234,241 ****
--- 257,320 ----
  the size specified on the server is used.   This works for BOOTP as
  well as DHCP responses.
  .RE
  .PP
+ .B option \fBdhcp-message\fR \fItext\fR\fB;\fR
+ .RS 0.25i
+ .PP
+ This option is used by a DHCP server to provide an error message to a
+ DHCP client in a DHCPNAK message in the event of a failure. A client
+ may use this option in a DHCPDECLINE message to indicate why the
+ client declined the offered parameters.
+ .PP
+ This option is not user configurable.
+ .RE
+ .PP
+ .B option \fBdhcp-message-type\fR \fIuint8\fR\fB;\fR
+ .RS 0.25i
+ .PP
+ This option, sent by both client and server, specifies the type of DHCP
+ message contained in the DHCP packet. Possible values (taken directly from
+ RFC2132) are:
+ .PP
+ .nf
+              1     DHCPDISCOVER
+              2     DHCPOFFER
+              3     DHCPREQUEST
+              4     DHCPDECLINE
+              5     DHCPACK
+              6     DHCPNAK
+              7     DHCPRELEASE
+              8     DHCPINFORM               
+ .fi
+ .PP
+ This option is not user configurable.
+ .PP
+ .RE
+ .B option \fBdhcp-option-overload\fR \fIuint8\fR\fB;\fR
+ .RS 0.25i
+ .PP
+ This option is used to indicate that the DHCP 'sname' or 'file'
+ fields are being overloaded by using them to carry DHCP options. A
+ DHCP server inserts this option if the returned parameters will
+ exceed the usual space allotted for options.
+ .PP
+ If this option is present, the client interprets the specified
+ additional fields after it concludes interpretation of the standard
+ option fields.
+ .PP
+ Legal values for this option are:
+ .PP
+ .nf
+              1     the 'file' field is used to hold options
+              2     the 'sname' field is used to hold options
+              3     both fields are used to hold options                        
+ .fi
+ .PP
+ This option is not user configurable.
+ .PP
+ .RE
+ .PP
  .B option \fBdhcp-parameter-request-list\fR \fIuint16\fR\fB;\fR
  .RS 0.25i
  .PP
  This option, when sent by the client, specifies which options the
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*** 250,257 ****
--- 329,386 ----
  more limited set of options than those the server would normally
  return.
  .RE
  .PP
+ .B option \fBdhcp-rebinding-time\fR \fIuint32\fR\fB;\fR
+ .RS 0.25i
+ .PP
+ This option specifies the number of seconds from the time a client gets
+ an address until the client transitions to the REBINDING state.
+ .PP
+ This option is not user configurable.
+ .PP
+ .RE
+ .PP
+ .B option \fBdhcp-renewal-time\fR \fIuint32\fR\fB;\fR
+ .RS 0.25i
+ .PP
+ This option specifies the number of seconds from the time a client gets
+ an address until the client transitions to the RENEWING state.
+ .PP
+ This option is not user configurable.
+ .PP
+ .RE
+ .PP
+ .B option \fBdhcp-requested-address\fR \fIip-address\fR\fB;\fR
+ .RS 0.25i
+ .PP
+ This option is used by the client in a DHCPDISCOVER to
+ request that a particular IP address be assigned.                 
+ .PP
+ This option is not user configurable.
+ .PP
+ .RE
+ .PP
+ .B option \fBdhcp-server-identifier\fR \fIip-address\fR\fB;\fR
+ .RS 0.25i
+ .PP
+ This option is used in DHCPOFFER and DHCPREQUEST messages, and may
+ optionally be included in the DHCPACK and DHCPNAK messages.  DHCP
+ servers include this option in the DHCPOFFER in order to allow the
+ client to distinguish between lease offers.  DHCP clients use the
+ contents of the 'server identifier' field as the destination address
+ for any DHCP messages unicast to the DHCP server.  DHCP clients also
+ indicate which of several lease offers is being accepted by including
+ this option in a DHCPREQUEST message.
+ .PP
+ The value of this option is the IP address of the server.
+ .PP
+ This option is not directly user configurable. See the 
+ \fIserver-identifier\fR server option in
+ .B \fIdhcpd.conf(5).
+ .PP
+ .RE
+ .PP
  .B option \fBdomain-name\fR \fItext\fR\fB;\fR
  .RS 0.25i
  .PP
  This option specifies the domain name that client should use when
***************
*** 266,274 ****
  (STD 13, RFC 1035) name servers available to the client.  Servers
  should be listed in order of preference.
  .RE
  .PP
! .B option \fBextensions-path-name\fR \fItext\fR\fB;\fR
  .RS 0.25i
  .PP
  This option specifies the name of a file containing additional options
  to be interpreted according to the DHCP option format as specified in
--- 395,403 ----
  (STD 13, RFC 1035) name servers available to the client.  Servers
  should be listed in order of preference.
  .RE
  .PP
! .B option \fBextensions-path\fR \fItext\fR\fB;\fR
  .RS 0.25i
  .PP
  This option specifies the name of a file containing additional options
  to be interpreted according to the DHCP option format as specified in
***************
*** 471,494 ****
  parameter for the client as specified in RFC 1001/1002. See RFC1001,
  RFC1002, and RFC1035 for character-set restrictions.
  .RE
  .PP
- .B option \fBnwip-domain\fR \fIstring\fR\fB;\fR
- .RS 0.25i
- .PP
- The name of the NetWare/IP domain that a NetWare/IP client should
- use.
- .RE
- .PP
- .B option \fBnwip-suboptions\fR \fIstring\fR\fB;\fR
- .RS 0.25i
- .PP
- A sequence of suboptions for NetWare/IP clients - see RFC2242 for
- details.   Normally this option is set by specifying specific
- NetWare/IP suboptions - see the NETWARE/IP SUBOPTIONS section for more
- information.
- .RE
- .PP
  .B option \fBnis-domain\fR \fItext\fR\fB;\fR
  .RS 0.25i
  .PP
  This option specifies the name of the client's NIS (Sun Network
--- 600,607 ----
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*** 548,555 ****
--- 661,684 ----
  servers available to the client.  Servers should be listed in order
  of preference.
  .RE
  .PP
+ .B option \fBnwip-domain\fR \fIstring\fR\fB;\fR
+ .RS 0.25i
+ .PP
+ The name of the NetWare/IP domain that a NetWare/IP client should
+ use.
+ .RE
+ .PP
+ .B option \fBnwip-suboptions\fR \fIstring\fR\fB;\fR
+ .RS 0.25i
+ .PP
+ A sequence of suboptions for NetWare/IP clients - see RFC2242 for
+ details.   Normally this option is set by specifying specific
+ NetWare/IP suboptions - see the NETWARE/IP SUBOPTIONS section for more
+ information.
+ .RE
+ .PP
  .B option \fBpath-mtu-aging-timeout\fR \fIuint32\fR\fB;\fR
  .RS 0.25i
  .PP
  This option specifies the timeout (in seconds) to use when aging Path
***************
*** 598,606 ****
  The POP3 server option specifies a list of POP3 available to the
  client.  Servers should be listed in order of preference.
  .RE
  .PP
- .nf
  .B option \fBresource-location-servers\fR \fIip-address\fR
                                [\fB, \fR\fIip-address\fR...]\fB;\fR
  .fi
  .RS 0.25i
--- 727,734 ----
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*** 744,751 ****
--- 872,893 ----
  assigned will override the subnet mask specified in the subnet
  declaration.
  .RE
  .PP
+ .B option \fBsubnet-selection\fR \fIstring\fR\fB;\fR
+ .RS 0.25i
+ .PP
+ Sent by the client if an address is required in a subnet other than the one
+ that would normally be selected (based on the relaying address of the
+ connected subnet the request is obtained from). See RFC3011. Note that the
+ option number used by this server is 118; this has not always been the
+ defined number, and some clients may use a different value. Use of this
+ option should be regarded as slightly experimental!
+ .RE
+ .PP
+ This option is not user configurable in the server.
+ .PP
+ .PP
  .B option \fBswap-server\fR \fIip-address\fR\fB;\fR
  .RS 0.25i
  .PP
  This specifies the IP address of the client's swap server.
***************
*** 875,897 ****
  ENCAPSULATED OPTIONS section of the \fIdhcpd.conf\fI manual page for
  details.
  .RE
  .PP
  .B option \fBx-display-manager\fR \fIip-address\fR [\fB,\fR \fIip-address\fR...
  ]\fB;\fR
  .RS 0.25i
  .PP
  This option specifies a list of systems that are running the X Window
  System Display Manager and are available to the client.  Addresses
  should be listed in order of preference.
- .RE
- .PP
- .B option \fBwww-server\fR \fIip-address\fR [\fB,\fR
- \fIip-address\fR... ]\fB;\fR
- .RS 0.25i
- .PP
- The WWW server option specifies a list of WWW available to the
- client.  Servers should be listed in order of preference.
  .RE
  .SH RELAY AGENT INFORMATION OPTION
  An IETF draft, draft-ietf-dhc-agent-options-11.txt, defines a series
  of encapsulated options that a relay agent can add to a DHCP packet
--- 1017,1039 ----
  ENCAPSULATED OPTIONS section of the \fIdhcpd.conf\fI manual page for
  details.
  .RE
  .PP
+ .B option \fBwww-server\fR \fIip-address\fR [\fB,\fR
+ \fIip-address\fR... ]\fB;\fR
+ .RS 0.25i
+ .PP
+ The WWW server option specifies a list of WWW available to the
+ client.  Servers should be listed in order of preference.
+ .RE
+ .PP
  .B option \fBx-display-manager\fR \fIip-address\fR [\fB,\fR \fIip-address\fR...
  ]\fB;\fR
  .RS 0.25i
  .PP
  This option specifies a list of systems that are running the X Window
  System Display Manager and are available to the client.  Addresses
  should be listed in order of preference.
  .RE
  .SH RELAY AGENT INFORMATION OPTION
  An IETF draft, draft-ietf-dhc-agent-options-11.txt, defines a series
  of encapsulated options that a relay agent can add to a DHCP packet