607 lines
21 KiB
Groff
607 lines
21 KiB
Groff
.\" $OpenBSD: dhcp-options.5,v 1.5 2005/03/02 15:30:42 jmc Exp $
|
|
.\"
|
|
.\" Copyright (c) 1995, 1996, 1997, 1998 The Internet Software Consortium.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\"
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. Neither the name of The Internet Software Consortium nor the names
|
|
.\" of its contributors may be used to endorse or promote products derived
|
|
.\" from this software without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND
|
|
.\" CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
|
.\" INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
.\" DISCLAIMED. IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR
|
|
.\" CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
.\" LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
|
.\" USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
.\" ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" This software has been written for the Internet Software Consortium
|
|
.\" by Ted Lemon <mellon@fugue.com> in cooperation with Vixie
|
|
.\" Enterprises. To learn more about the Internet Software Consortium,
|
|
.\" see ``http://www.isc.org/isc''. To learn more about Vixie
|
|
.\" Enterprises, see ``http://www.vix.com''.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd January 1, 1995
|
|
.Dt DHCP-OPTIONS 5
|
|
.Os
|
|
.Sh NAME
|
|
.Nm dhcp-options
|
|
.Nd Dynamic Host Configuration Protocol options
|
|
.Sh DESCRIPTION
|
|
The Dynamic Host Configuration protocol allows the client to receive
|
|
.Ic options
|
|
from the DHCP server describing the network configuration and various
|
|
services that are available on the network.
|
|
When configuring
|
|
.Xr dhcpd 8
|
|
or
|
|
.Xr dhclient 8 ,
|
|
options must often be declared.
|
|
The syntax for declaring options, and the names and formats of the options
|
|
that can be declared, are documented here.
|
|
.Sh REFERENCE: OPTION STATEMENTS
|
|
DHCP
|
|
.Ic option
|
|
statements always start with the
|
|
.Ic option
|
|
keyword, followed by an option name, followed by option data.
|
|
The option names and data formats are described below.
|
|
It is not necessary to exhaustively specify all DHCP options -
|
|
only those options which are needed by clients must be specified.
|
|
.Pp
|
|
Option data comes in a variety of formats, as defined below:
|
|
.Pp
|
|
The
|
|
.Ar ip-address
|
|
data type can be entered either as an explicit IP address
|
|
(e.g.,
|
|
.Li 239.254.197.10 )
|
|
or as a domain name (e.g.,
|
|
.Li haagen.isc.org ) .
|
|
A domain name must resolve to a single IP address.
|
|
.Pp
|
|
The
|
|
.Ar int32
|
|
data type specifies a signed 32-bit integer.
|
|
The
|
|
.Ar uint32
|
|
data type specifies an unsigned 32-bit integer.
|
|
The
|
|
.Ar int16
|
|
and
|
|
.Ar uint16
|
|
data types specify signed and unsigned 16-bit integers.
|
|
The
|
|
.Ar int8
|
|
and
|
|
.Ar uint8
|
|
data types specify signed and unsigned 8-bit integers.
|
|
Unsigned 8-bit integers are also sometimes referred to as octets.
|
|
.Pp
|
|
The
|
|
.Ar string
|
|
data type specifies an
|
|
.Tn NVT
|
|
.Pq Network Virtual Terminal
|
|
.Tn ASCII
|
|
string, which must be enclosed in double quotes - for example,
|
|
to specify a domain-name option, the syntax would be
|
|
.Pp
|
|
.Dl option domain-name \&"isc.org";
|
|
.Pp
|
|
The
|
|
.Ar flag
|
|
data type specifies a boolean value.
|
|
Booleans can be either
|
|
.Li true
|
|
or
|
|
.Li false
|
|
(or
|
|
.Li on
|
|
or
|
|
.Li off ,
|
|
if that makes more sense to you).
|
|
.Pp
|
|
The
|
|
.Ar data-string
|
|
data type specifies either an
|
|
.Tn NVT ASCII
|
|
string enclosed in double quotes, or a series of octets specified in
|
|
hexadecimal, separated by colons.
|
|
For example:
|
|
.Pp
|
|
.Dl option dhcp-client-identifier \&"CLIENT-FOO";
|
|
or
|
|
.Dl option dhcp-client-identifier 43:4c:49:45:54:2d:46:4f:4f;
|
|
.Pp
|
|
The documentation for the various options mentioned below is taken
|
|
from the IETF draft document on DHCP options, RFC 2132.
|
|
Options which are not listed by name may be defined by the name
|
|
.Li option- Ns Ar nnn ,
|
|
where
|
|
.Ar nnn
|
|
is the decimal number of the option code.
|
|
These options may be followed either by a string, enclosed in quotes, or by
|
|
a series of octets, expressed as two-digit hexadecimal numbers separated
|
|
by colons.
|
|
For example:
|
|
.Bd -literal -offset indent
|
|
option option-133 "my-option-133-text";
|
|
option option-129 1:54:c9:2b:47;
|
|
.Ed
|
|
.Pp
|
|
Because
|
|
.Xr dhcpd 8
|
|
does not know the format of these undefined option codes,
|
|
no checking is done to ensure the correctness of the entered data.
|
|
.Pp
|
|
The standard options are:
|
|
.Ss RFC 1497 Vendor Extensions
|
|
.Bl -tag -width indent
|
|
.It Ic option subnet-mask Ar ip-address ;
|
|
The
|
|
.Ic subnet-mask
|
|
option specifies the client's subnet mask as per RFC 950.
|
|
If no subnet-mask option is provided anywhere in scope, as a last resort
|
|
.Xr dhcpd 8
|
|
will use the subnet mask from the subnet declaration for the network on
|
|
which an address is being assigned.
|
|
However,
|
|
.Em any
|
|
subnet-mask option declaration that is in scope for the address being
|
|
assigned will override the subnet mask specified in the subnet declaration.
|
|
.It Ic option time-offset Ar int32 ;
|
|
The
|
|
.Ic time-offset
|
|
option specifies the offset of the client's subnet in seconds from
|
|
Coordinated Universal Time (UTC).
|
|
.It Xo
|
|
.Ic option routers Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The
|
|
.Ic routers
|
|
option specifies a list of IP addresses for routers on the client's subnet.
|
|
Routers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option time-servers Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The
|
|
.Ic time-server
|
|
option specifies a list of RFC 868 time servers available to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option ien116-name-servers Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The
|
|
.Ic ien116-name-servers
|
|
option specifies a list of IEN 116 name servers available to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option domain-name-servers Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The
|
|
.Ic domain-name-servers
|
|
option specifies a list of Domain Name System (STD 13, RFC 1035) name servers
|
|
available to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option log-servers Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The
|
|
.Ic log-servers
|
|
option specifies a list of MIT-LCS UDP log servers available to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option cookie-servers Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The
|
|
.Ic cookie-servers
|
|
option specifies a list of RFC 865 cookie servers available to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option lpr-servers Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The
|
|
.Ic lpr-servers
|
|
option specifies a list of RFC 1179 line printer servers available to the
|
|
client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option impress-servers Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The
|
|
.Ic impress-servers
|
|
option specifies a list of Imagen Impress servers available to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option resource-location-servers Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
This option specifies a list of RFC 887 Resource Location servers available
|
|
to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Ic option host-name Ar string ;
|
|
This option specifies the name of the client.
|
|
The name may or may not be qualified with the local domain name
|
|
(it is preferable to use the
|
|
.Ic domain-name
|
|
option to specify the domain name).
|
|
See RFC 1035 for character set restrictions.
|
|
.It Ic option boot-size Ar uint16 ;
|
|
This option specifies the length in 512-octet blocks of the default
|
|
boot image for the client.
|
|
.It Ic option merit-dump Ar string ;
|
|
This option specifies the pathname of a file to which the client's
|
|
core image should be dumped in the event the client crashes.
|
|
The path is formatted as a character string consisting of characters from
|
|
the
|
|
.Tn NVT ASCII
|
|
character set.
|
|
.It Ic option domain-name Ar string ;
|
|
This option specifies the domain name that the client should use when
|
|
resolving hostnames via the Domain Name System.
|
|
.It Ic option swap-server Ar ip-address ;
|
|
This specifies the IP address of the client's swap server.
|
|
.It Ic option root-path Ar string ;
|
|
This option specifies the pathname that contains the client's root disk.
|
|
The path is formatted as a character string consisting of characters from
|
|
the
|
|
.Tn NVT ASCII
|
|
character set.
|
|
.El
|
|
.Ss IP Layer Parameters per Host
|
|
.Bl -tag -width indent
|
|
.It Ic option ip-forwarding Ar flag ;
|
|
This option specifies whether the client should configure its IP layer
|
|
for packet forwarding.
|
|
A value of 0 means disable IP forwarding, and a value of 1 means enable
|
|
IP forwarding.
|
|
.It Ic option non-local-source-routing Ar flag ;
|
|
This option specifies whether the client should configure its IP
|
|
layer to allow forwarding of datagrams with non-local source routes
|
|
(see Section 3.3.5 of [4] for a discussion of this topic).
|
|
A value of 0 means disallow forwarding of such datagrams, and a value of 1
|
|
means allow forwarding.
|
|
.It Xo
|
|
.Ic option policy-filter Ar ip-address ip-address
|
|
.Oo , Ar ip-address ip-address ... Oc ;
|
|
.Xc
|
|
This option specifies policy filters for non-local source routing.
|
|
The filters consist of a list of IP addresses and masks which specify
|
|
destination/mask pairs with which to filter incoming source routes.
|
|
.Pp
|
|
Any source-routed datagram whose next-hop address does not match one
|
|
of the filters should be discarded by the client.
|
|
.Pp
|
|
See STD 3 (RFC 1122) for further information.
|
|
.It Ic option max-dgram-reassembly Ar uint16 ;
|
|
This option specifies the maximum size datagram that the client should be
|
|
prepared to reassemble.
|
|
The minimum legal value is 576.
|
|
.It Ic option default-ip-ttl Ar uint8 ;
|
|
This option specifies the default time-to-live that the client should
|
|
use on outgoing datagrams.
|
|
.It Ic option path-mtu-aging-timeout Ar uint32 ;
|
|
This option specifies the timeout (in seconds) to use when aging Path
|
|
MTU values discovered by the mechanism defined in RFC 1191.
|
|
.It Xo
|
|
.Ic option path-mtu-plateau-table Ar uint16
|
|
.Oo , Ar uint16 ... Oc ;
|
|
.Xc
|
|
This option specifies a table of MTU sizes to use when performing
|
|
Path MTU Discovery as defined in RFC 1191.
|
|
The table is formatted as a list of 16-bit unsigned integers,
|
|
ordered from smallest to largest.
|
|
The minimum MTU value cannot be smaller than 68.
|
|
.El
|
|
.Ss IP Layer Parameters per Interface
|
|
.Bl -tag -width indent
|
|
.It Ic option interface-mtu Ar uint16 ;
|
|
This option specifies the MTU to use on this interface.
|
|
The minimum legal value for the MTU is 68.
|
|
.It Ic option all-subnets-local Ar flag ;
|
|
This option specifies whether or not the client may assume that all subnets
|
|
of the IP network to which the client is connected use the same MTU as the
|
|
subnet of that network to which the client is directly connected.
|
|
A value of 1 indicates that all subnets share the same MTU.
|
|
A value of 0 means that the client should assume that some subnets of the
|
|
directly connected network may have smaller MTUs.
|
|
.It Ic option broadcast-address Ar ip-address ;
|
|
This option specifies the broadcast address in use on the client's subnet.
|
|
Legal values for broadcast addresses are specified in section 3.2.1.3 of
|
|
STD 3 (RFC 1122).
|
|
.It Ic option perform-mask-discovery Ar flag ;
|
|
This option specifies whether or not the client should perform subnet mask
|
|
discovery using ICMP.
|
|
A value of 0 indicates that the client should not perform mask discovery.
|
|
A value of 1 means that the client should perform mask discovery.
|
|
.It Ic option mask-supplier Ar flag ;
|
|
This option specifies whether or not the client should respond to subnet mask
|
|
requests using ICMP.
|
|
A value of 0 indicates that the client should not respond.
|
|
A value of 1 means that the client should respond.
|
|
.It Ic option router-discovery Ar flag ;
|
|
This option specifies whether or not the client should solicit routers using
|
|
the Router Discovery mechanism defined in RFC 1256.
|
|
A value of 0 indicates that the client should not perform router discovery.
|
|
A value of 1 means that the client should perform router discovery.
|
|
.It Ic option router-solicitation-address Ar ip-address ;
|
|
This option specifies the address to which the client should transmit
|
|
router solicitation requests.
|
|
.It Xo
|
|
.Ic option static-routes Ar ip-address ip-address
|
|
.Oo , Ar ip-address ip-address ... Oc ;
|
|
.Xc
|
|
This option specifies a list of static routes that the client should
|
|
install in its routing cache.
|
|
If multiple routes to the same destination are specified, they are listed
|
|
in descending order of priority.
|
|
.Pp
|
|
The routes consist of a list of IP address pairs.
|
|
The first address is the destination address,
|
|
and the second address is the router for the destination.
|
|
.Pp
|
|
The default route (0.0.0.0) is an illegal destination for a static route.
|
|
To specify the default route, use the
|
|
.Ic routers
|
|
option.
|
|
.El
|
|
.Ss Link Layer Parameters per Interface
|
|
.Bl -tag -width indent
|
|
.It Ic option trailer-encapsulation Ar flag ;
|
|
This option specifies whether or not the client should negotiate the
|
|
use of trailers (RFC 893 [14]) when using the ARP protocol.
|
|
A value of 0 indicates that the client should not attempt to use trailers.
|
|
A value of 1 means that the client should attempt to use trailers.
|
|
.It Ic option arp-cache-timeout Ar uint32 ;
|
|
This option specifies the timeout in seconds for ARP cache entries.
|
|
.It Ic option ieee802-3-encapsulation Ar flag ;
|
|
This option specifies whether or not the client should use Ethernet
|
|
Version 2 (RFC 894) or IEEE 802.3 (RFC 1042) encapsulation if the
|
|
interface is an Ethernet.
|
|
A value of 0 indicates that the client should use RFC 894 encapsulation.
|
|
A value of 1 means that the client should use RFC 1042 encapsulation.
|
|
.El
|
|
.Ss TCP Parameters
|
|
.Bl -tag -width indent
|
|
.It Ic option default-tcp-ttl Ar uint8 ;
|
|
This option specifies the default TTL that the client should use when
|
|
sending TCP segments.
|
|
The minimum value is 1.
|
|
.It Ic option tcp-keepalive-interval Ar uint32 ;
|
|
This option specifies the interval (in seconds) that the client TCP
|
|
should wait before sending a keepalive message on a TCP connection.
|
|
The time is specified as a 32-bit unsigned integer.
|
|
A value of zero indicates that the client should not generate keepalive
|
|
messages on connections unless specifically requested by an application.
|
|
.It Ic option tcp-keepalive-garbage Ar flag ;
|
|
This option specifies whether or not the client should send TCP keepalive
|
|
messages with an octet of garbage for compatibility with older implementations.
|
|
A value of 0 indicates that a garbage octet should not be sent.
|
|
A value of 1 indicates that a garbage octet should be sent.
|
|
.El
|
|
.Ss Application and Service Parameters
|
|
.Bl -tag -width indent
|
|
.It Ic option nis-domain Ar string ;
|
|
This option specifies the name of the client's NIS (Sun Network Information
|
|
Services) domain.
|
|
The domain is formatted as a character string consisting of characters
|
|
from the
|
|
.Tn NVT ASCII
|
|
character set.
|
|
.It Xo
|
|
.Ic option nis-servers Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
This option specifies a list of IP addresses indicating NIS servers
|
|
available to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option ntp-servers Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
This option specifies a list of IP addresses indicating NTP (RFC 1035)
|
|
servers available to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option netbios-name-servers Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The NetBIOS name server (NBNS) option specifies a list of RFC 1001/1002
|
|
NBNS name servers listed in order of preference.
|
|
NetBIOS Name Service is currently more commonly referred to as WINS.
|
|
WINS servers can be specified using the
|
|
.Ic netbios-name-servers
|
|
option.
|
|
.It Xo
|
|
.Ic option netbios-dd-server Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The NetBIOS datagram distribution server (NBDD) option specifies a
|
|
list of RFC 1001/1002 NBDD servers listed in order of preference.
|
|
.It Ic option netbios-node-type Ar uint8 ;
|
|
The NetBIOS node type option allows NetBIOS over TCP/IP clients which
|
|
are configurable to be configured as described in RFC 1001/1002.
|
|
The value is specified as a single octet which identifies the client type.
|
|
.Pp
|
|
Possible node types are:
|
|
.Bl -tag -width indent
|
|
.It 1
|
|
B-node: Broadcast - no WINS
|
|
.It 2
|
|
P-node: Peer - WINS only
|
|
.It 4
|
|
M-node: Mixed - broadcast, then WINS
|
|
.It 8
|
|
H-node: Hybrid - WINS, then broadcast
|
|
.El
|
|
.It Ic option netbios-scope Ar string ;
|
|
The NetBIOS scope option specifies the NetBIOS over TCP/IP scope
|
|
parameter for the client as specified in RFC 1001/1002.
|
|
See RFC 1001, RFC 1002, and RFC 1035 for character-set restrictions.
|
|
.It Xo
|
|
.Ic option font-servers Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
This option specifies a list of X Window System Font servers available
|
|
to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option x-display-manager Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
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.
|
|
.It Ic option dhcp-client-identifier Ar data-string ;
|
|
This option can be used to specify a DHCP client identifier in a
|
|
host declaration, so that
|
|
.Xr dhcpd 8
|
|
can find the host record by matching against the client identifier.
|
|
.It Ic option nisplus-domain Ar string ;
|
|
This option specifies the name of the client's NIS+ domain.
|
|
The domain is formatted as a character string consisting of characters
|
|
from the
|
|
.Tn NVT ASCII
|
|
character set.
|
|
.It Xo
|
|
.Ic option nisplus-servers Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
This option specifies a list of IP addresses indicating NIS+ servers
|
|
available to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Ic option tftp-server-name Ar string ;
|
|
This option is used to identify a TFTP server and, if supported by the
|
|
client, should have the same effect as the
|
|
.Ic server-name
|
|
declaration.
|
|
BOOTP clients are unlikely to support this option.
|
|
Some DHCP clients will support it, and others actually require it.
|
|
.It Ic option bootfile-name Ar string ;
|
|
This option is used to identify a bootstrap file.
|
|
If supported by the client, it should have the same effect as the
|
|
.Ic filename
|
|
declaration.
|
|
BOOTP clients are unlikely to support this option.
|
|
Some DHCP clients will support it, and others actually require it.
|
|
.It Xo
|
|
.Ic option mobile-ip-home-agent Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
This option specifies a list of IP addresses indicating mobile IP
|
|
home agents available to the client.
|
|
Agents should be listed in order of preference, although normally there
|
|
will be only one such agent.
|
|
.It Xo
|
|
.Ic option smtp-server Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The
|
|
.Ic smtp-server
|
|
option specifies a list of SMTP servers available to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option pop-server Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The
|
|
.Ic pop-server
|
|
option specifies a list of POP3 servers available to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option nntp-server Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The
|
|
.Ic nntp-server
|
|
option specifies a list of NNTP servers available to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option www-server Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The
|
|
.Ic www-server
|
|
option specifies a list of WWW servers available to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option finger-server Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The
|
|
.Ic finger-server
|
|
option specifies a list of
|
|
.Xr finger 1
|
|
servers available to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option irc-server Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The
|
|
.Ic irc-server
|
|
option specifies a list of IRC servers available to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option streettalk-server Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The
|
|
.Ic streettalk-server
|
|
option specifies a list of StreetTalk servers available to the client.
|
|
Servers should be listed in order of preference.
|
|
.It Xo
|
|
.Ic option streettalk-directory-assistance-server Ar ip-address
|
|
.Oo , Ar ip-address ... Oc ;
|
|
.Xc
|
|
The StreetTalk Directory Assistance (STDA) server option specifies a
|
|
list of STDA servers available to the client.
|
|
Servers should be listed in order of preference.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr dhclient.conf 5 ,
|
|
.Xr dhcpd.conf 5 ,
|
|
.Xr dhcpd.leases 5 ,
|
|
.Xr dhclient 8 ,
|
|
.Xr dhcpd 8
|
|
.Rs
|
|
.%R "RFC 2131, RFC 2132"
|
|
.Re
|
|
.Sh AUTHORS
|
|
.An -nosplit
|
|
The
|
|
.Xr dhcpd 8
|
|
utility
|
|
was written by
|
|
.An Ted Lemon Aq mellon@vix.com
|
|
under a contract with Vixie Labs.
|
|
.Pp
|
|
The current implementation was reworked by
|
|
.An Henning Brauer Aq henning@openbsd.org .
|