xref: /titanic_51/usr/src/cmd/cmd-inet/sbin/dhcpagent/dhcpagent.dfl (revision 07d06da50d310a325b457d6330165aebab1e0064)
1#
2# CDDL HEADER START
3#
4# The contents of this file are subject to the terms of the
5# Common Development and Distribution License (the "License").
6# You may not use this file except in compliance with the License.
7#
8# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9# or http://www.opensolaris.org/os/licensing.
10# See the License for the specific language governing permissions
11# and limitations under the License.
12#
13# When distributing Covered Code, include this CDDL HEADER in each
14# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15# If applicable, add the following below this CDDL HEADER, with the
16# fields enclosed by brackets "[]" replaced with your own identifying
17# information: Portions Copyright [yyyy] [name of copyright owner]
18#
19# CDDL HEADER END
20#
21
22#
23# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
24# Use is subject to license terms.
25#
26
27#
28# This file contains tunable parameters for dhcpagent(1M).
29#
30
31# All parameters can be tuned for a specific interface by prepending
32# the interface name to the parameter name.  For example, to make
33# VERIFIED_LEASE_ONLY happen on all interfaces except hme0, specify:
34#
35# hme0.VERIFIED_LEASE_ONLY=no
36# VERIFIED_LEASE_ONLY=yes
37#
38# An interface name alone specifies IPv4 DHCP.  For DHCPv6, append ".v6".
39# Some examples:
40#
41# hme0.VERIFIED_LEASE_ONLY=no		specify hme0 v4 behavior
42# hme0.v6.VERIFIED_LEASE_ONLY=no	specify hme0 v6 behavior
43# VERIFIED_LEASE_ONLY=no		match all v4 interfaces
44# .v6.VERIFIED_LEASE_ONLY=no		match all v6 interfaces
45
46# By default, when the DHCP agent is sent a SIGTERM (typically when
47# the system is shut down), all managed addresses are dropped rather
48# than released.  Dropping an address does not notify the DHCP server
49# that the address is no longer in use, leaving it possibly available
50# for subsequent use by the same client.  If DHCP is later restarted
51# on the interface, the client will ask the server if it can continue
52# to use the address.  If the server either grants the request, or
53# does not answer (and the lease has not yet expired), then the client
54# will use the original address.
55#
56# Similarly, when the system is suspended and then woken up or when
57# the link status transitions from down to up, DHCP will ask the server
58# to continue to use the managed address, in case the lease has changed.
59#
60# By uncommenting the following parameter-value pairs, all managed
61# addresses are released on SIGTERM instead, and any that may have been
62# saved but cannot be verified will not be used.  When SIGTERM is
63# received, the DHCP server is notified that the address is available
64# for use, and the address will not be saved for a later restart.  If
65# DHCP receives SIGTHAW or a link-up event, DHCP will attempt to verify
66# the previous lease, but if unable to do so, it will not attempt to
67# use that lease.  This behavior is often preferred for roaming systems.
68#
69# VERIFIED_LEASE_ONLY=yes
70# .v6.VERIFIED_LEASE_ONLY=yes
71
72# By default, the DHCP agent waits 3 seconds to collect OFFER
73# responses to a DISCOVER.  If it receives no OFFERs in this time, it
74# then waits for another 3 seconds, and so forth.  To change this
75# behavior, set and uncomment the following parameter-value pair.
76# Note: this does not control the retransmission strategy for
77# DISCOVERs, which is formally specified in RFC 2131.  This parameter
78# is specified in seconds.
79#
80# OFFER_WAIT=
81
82# By default, the DHCP agent does not send out a client identifier
83# (and hence, the chaddr field is used by the DHCP server as the
84# client identifier.)  To make the DHCP agent send a client
85# identifier, set and uncomment the following parameter-value pair.
86# Note that by default this is treated as an NVT ASCII string.  To
87# specify a binary value, prepend "0x" to a sequence of hexadecimal
88# digits (for example, the value 0xAABBCC11 would set the client
89# identifier to the 4-byte binary sequence 0xAA 0xBB 0xCC 0x11).
90#
91# CLIENT_ID=
92
93# By default, the DHCP agent will try to request the hostname currently
94# associated with the interface performing DHCP.  If this option is
95# enabled, the agent will attempt to find a host name in /etc/hostname.<if>,
96# which must contain a line of the form
97#
98#	inet name
99#
100# where "name" is a single RFC 1101-compliant token.  If found, the token
101# will be used to request that host name from the DHCP server.  To prevent
102# this, uncomment the following line.
103#
104# REQUEST_HOSTNAME=no
105
106# By default, a parameter request list requesting a subnet mask (1),
107# router (3), DNS server (6), hostname (12), DNS domain (15), broadcast
108# address (28), and encapsulated vendor options (43), is sent to the DHCP
109# server when the DHCP agent sends requests.  However, if desired, this
110# can be changed by altering the following parameter-value pair.  The
111# numbers correspond to the values defined in the IANA bootp-dhcp-parameters
112# registry at the time of this writing.  Site and standard option names from
113# /etc/dhcp/inittab are also accepted.
114#
115PARAM_REQUEST_LIST=1,3,6,12,15,28,43
116
117# The default DHCPv6 parameter request list has preference (7), unicast (12),
118# DNS addresses (23), DNS search list (24), NIS addresses (27), and
119# NIS domain (29).  This may be changed by altering the following parameter-
120# value pair.  The numbers correspond to the values defined in the IANA
121# dhcpv6-parameters registry at the time of this writing.  Site and standard
122# option names from /etc/dhcp/inittab6 are also accepted.
123.v6.PARAM_REQUEST_LIST=7,12,23,24,27,29
124
125# The parameter ignore list allows you to instruct the DHCP client to discard
126# optional parameters received from the DHCP server.  The format is the same
127# as the request list above.  When discarded, a parameter will not be acted
128# on by the DHCP client or returned to users via the dhcpinfo(1) command.
129PARAM_IGNORE_LIST=
130.v6.PARAM_IGNORE_LIST=
131