Setting DHCP Client Configuration Parameters

The /etc/default/dhcpagent file on the client system contains tunable parameters for the dhcpagent. You can use a text editor to change several parameters that affect client operation. The /etc/default/dhcpagent file is well documented, so for more information, you should refer to the file as well as to the dhcpagent(1M) man page.

The /etc/dhcp.interface file is another location in which parameters affecting the DHCP client are set. Parameters set in this file are used by system startup scripts with the ifconfig command. This, however, affects only DHCPv4. There is no DHCPv6 equivalent.

By default, the DHCP client is configured as follows:

For DHCPv4

• The client system does not require a particular host name.

  If you want a client to request a specific host name, see DHCPv4 Client Host Names.

• Default requests for the client are given in /etc/default/dhcpagent, and includes DNS Server, DNS domain, and broadcast address.

  The DHCP client's parameter file can be set up to request more options in the PARAM_REQUEST_LIST keyword in the /etc/default/dhcpagent file. The DHCP server can be configured to provide options that were not specifically requested. See About DHCP Macros and Working With DHCP Macros (Task Map) for information about using DHCP server macros to send information to clients.

For DHCPv4 and DHCPv6

• The client system uses DHCP on one physical network interface.

  If you want to use DHCP on more than one physical network interface, see DHCP Client Systems With Multiple Network Interfaces.

• The client is not automatically configured as a name service client if the DHCP client was configured after the Oracle Solaris installation.

  See DHCP Client Systems and Name Services for information about using name services with DHCP clients.