# # CDDL HEADER START # # The contents of this file are subject to the terms of the # Common Development and Distribution License (the "License"). # You may not use this file except in compliance with the License. # # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE # or http://www.opensolaris.org/os/licensing. # See the License for the specific language governing permissions # and limitations under the License. # # When distributing Covered Code, include this CDDL HEADER in each # file and include the License file at usr/src/OPENSOLARIS.LICENSE. # If applicable, add the following below this CDDL HEADER, with the # fields enclosed by brackets "[]" replaced with your own identifying # information: Portions Copyright [yyyy] [name of copyright owner] # # CDDL HEADER END # # # Copyright 2007 Sun Microsystems, Inc. All rights reserved. # Use is subject to license terms. # #ident "%Z%%M% %I% %E% SMI" # # # This file contains tunable parameters for dhcpagent(1M). # # All parameters can be tuned for a specific interface by prepending # the interface name to the parameter name. For example, to make # RELEASE_ON_SIGTERM happen on all interfaces except hme0, specify: # # hme0.RELEASE_ON_SIGTERM=no # RELEASE_ON_SIGTERM=yes # # An interface name alone specifies IPv4 DHCP. For DHCPv6, append ".v6". # Some examples: # # hme0.RELEASE_ON_SIGTERM=no specify hme0 v4 behavior # hme0.v6.RELEASE_ON_SIGTERM=no specify hme0 v6 behavior # RELEASE_ON_SIGTERM=no match all v4 interfaces # .v6.RELEASE_ON_SIGTERM=no match all v6 interfaces # By default, when the DHCP agent is sent a SIGTERM (typically when # the system is shut down), all managed addresses are dropped rather # than released. Dropping an address does not notify the DHCP server # that the address is no longer in use, leaving it possibly available # for subsequent use by the same client. If DHCP is later restarted # on the interface, the client will ask the server if it can continue # to use the address. If the server either grants the request, or # does not answer (and the lease has not yet expired), then the client # will use the original address. # # By uncommenting the following parameter-value pairs, all managed # interfaces are released on SIGTERM instead. In that case, the DHCP # server is notified that the address is available for use. Further, # if DHCP is later restarted on the interface, the client will not # request its previous address from the server, nor will it attempt to # reuse the previous lease. This behavior is often preferred for # roaming systems. # # RELEASE_ON_SIGTERM=yes # .v6.RELEASE_ON_SIGTERM=yes # By default, the DHCP agent waits 3 seconds to collect OFFER # responses to a DISCOVER. If it receives no OFFERs in this time, it # then waits for another 3 seconds, and so forth. To change this # behavior, set and uncomment the following parameter-value pair. # Note: this does not control the retransmission strategy for # DISCOVERs, which is formally specified in RFC 2131. This parameter # is specified in seconds. # # OFFER_WAIT= # By default, the DHCP agent does not send out a client identifier # (and hence, the chaddr field is used by the DHCP server as the # client identifier.) To make the DHCP agent send a client # identifier, set and uncomment the following parameter-value pair. # Note that by default this is treated as an NVT ASCII string. To # specify a binary value, prepend "0x" to a sequence of hexadecimal # digits (for example, the value 0xAABBCC11 would set the client # identifier to the 4-byte binary sequence 0xAA 0xBB 0xCC 0x11). # # CLIENT_ID= # By default, the DHCP agent will try to request the hostname currently # associated with the interface performing DHCP. If this option is # enabled, the agent will attempt to find a host name in /etc/hostname.<if>, # which must contain a line of the form # # inet name # # where "name" is a single RFC 1101-compliant token. If found, the token # will be used to request that host name from the DHCP server. To prevent # this, uncomment the following line. # # REQUEST_HOSTNAME=no # By default, a parameter request list requesting a subnet mask (1), # router (3), DNS server (6), hostname (12), DNS domain (15), broadcast # address (28), and encapsulated vendor options (43), is sent to the DHCP # server when the DHCP agent sends requests. However, if desired, this # can be changed by altering the following parameter-value pair. The # numbers correspond to the values defined in the IANA bootp-dhcp-parameters # registry at the time of this writing. # PARAM_REQUEST_LIST=1,3,6,12,15,28,43 # The default DHCPv6 parameter request list has preference (7), unicast (12), # DNS addresses (23), DNS search list (24), NIS addresses (27), and # NIS domain (29). This may be changed by altering the following parameter- # value pair. The numbers correspond to the values defined in the IANA # dhcpv6-parameters registry at the time of this writing. .v6.PARAM_REQUEST_LIST=7,12,23,24,27,29