Client Requested DHCPv6 Options
The following default options are encapsulated by the DHCPv6 client when
requesting DHCPv6 server.
- OPTION_CLIENTID (code 1). The Client Identifier option is used to carry
a DUID identifying a client between a client and a server.
- OPTION_SERVERID (code 2). The Server Identifier option is used to carry
a DUID identifying a server between a client and a server.
OPTION_SERVERID option is included if DHCPv6 client is responding to a particular
- OPTION_IA_NA (code 3). The client uses IA_NA options to request the assignment of
non-temporary address assignment.
- OPTION_IAADDR (code 5). The IA_ADDR is used to specify the IPv6 addresses associated with
IA_NA or IA_TA option.
OPTION_IAADDR is included only if the client lease is
IAID is the last 4 bytes of the hardware address
- OPTION_ORO (code 6). The Option Request option is used to identify a list of options in a
message between client and server. A client includes an Option Request option in a Solicit,
Request, Renew, Rebind, Confirm or Information-request message to inform the server about
options the client is interested in.
The following are the Default requested options included by the ExtremeXOS
DHCPv6 client as
part of Option Request Option (OPTION_ORO) option:
- OPTION_DNS_SERVERS (code 23).
- OPTION_DOMAIN_LIST (code 24). Reference for above ORO options: http://tools.ietf.org/html/rfc3646.
- OPTION_ELAPSED_TIME(code 8). A client MUST include an Elapsed Time
option in messages to indicate how long the client has been trying to complete a
DHCP message exchange.