dhcp6c.conf

dhcp6c.conf(5)		Linux System Manager’s Manual	       dhcp6c.conf(5)



NAME
       dhcp6c.conf - configuration file of the DHCPv6 client daemon, dhcp6c


DESCRIPTION
       dhcp6c.conf is a configuration file for dhcp6c (DHCPv6 client).

       dhcp6c  is configured by the configuration information (such as rapid-
       commit, requesting temp-address, or prefix-delegation) in  this	file.
       dhcp6c.conf is an ASCII text file and lines that start with # are com-
       ments.


       STATEMENTS

       interface <interface name>
       {
	    [declarations]
       };
       Write configurations for this interface in this statement.  In [decla-
       rations], options can be specified.


       DECLARATIONS

       send [dhcpoptions];
       With  this  declaration,	 dhcp6c	 sends	specified options.  Currently
       rapid-commit is defined.

       send rapid-commit;
       This declaration enables dhcp6c to request the dhcp6s server  to	 per-
       form a Rapid Commit.

       request [dhcpoptions];
       This  declaration  enables  dhcp6c to request specified options.	 Cur-
       rently temp-address, domain-name-servers,  and  prefix-delegation  are
       defined.

       request domain-name-servers;
       The  DHCPv6  mechanism provides a way to obtain configuration informa-
       tion such as a list of available DNS servers or NTP servers. This dec-
       laration	 enables  dhcp6c  to  request  a  DNS server address from the
       DHCPv6 server.

       request prefix-delegation;
       This declaration enables dhcp6c to request a Prefix Delegation to  the
       DHCPv6 server. dhcp6c gets a prefix assignment from the DHCPv6 server.

       request temp-address;
       This  declaration  enables  dhcp6c  to  request	temporary  addresses.
       dhcp6c  requests Non-temporary Addresses as default. This option makes
       dhcp6c request Temporary Addresses.

       information-only;
       This declaration enables dhcp6c to request host configuration informa-
       tion from the DHCPv6 server. If dhcp6c doesn’t need to be assigned any
       addresses, this option should be specified.

       address {
	    [<ipv6 address>/<prefix length>];
	    [prefer-life-time <preferred-lifetime>];
	    [valid-life-time <valid-lifetime>];
       };
       This declaration defines the dhcp6c client preferred IPv6 address, the
       preferred  lifetime  of	the  address, and the valid lifetime for this
       interface.

       prefix {
	    [<ipv6 prefix>/<prefix length>];
	    [prefer-life-time <preferred-lifetime>];
	    [valid-life-time <valid-lifetime>];
       };
       This declaration defines the dhcp6c  client  acting  as	a  requesting
       router  for  the preferred prefix, the prefix length, and the prefix’s
       preferred lifetime, and valid lifetime for this interface.

       prefer-life-time <preferred-lifetime>;
       This declaration sets the  preferred  lifetime  (in  seconds)  of  the
       address or prefix. This declaration is valid only in address or prefix
       declarations.

       valid-life-time <valid-lifetime>;
       This declaration sets the valid lifetime (in seconds) of	 the  address
       or prefix.  This declaration is valid only in address or prefix decla-
       rations.

       renew-time <renew-time>;
       This declaration specifies the Renew Time (in seconds) for this	Iden-
       tity  Association  (IA).	 Renew	Time  is  a T1 value in an IA option.
       dhcp6c sets the Renew Time in IA options to the specified value.

       rebind-time <rebind-time>;
       This declaration specifies the Rebind Time (in seconds) for  this  IA.
       Rebind  Time  is T2 value in an IA option. dhcp6c sets the Rebind Time
       in IA options to the specified value.


       DHCPOPTIONS

       rapid-commit
       If this option is used in a "send [dhcpoptions];" declaration,  dhcp6c
       sends DHCPv6 messages with a Rapid Commit option.

       domain-name-servers
       If  this	 option	 is  used  in a "request [dhcpoptions];" declaration,
       dhcp6c requests the DNS server address via the DHCPv6 mechanism.

       prefix-delegation
       If this option is used  in  a  "request	[dhcpoptions];"	 declaration,
       dhcp6c requests a Prefix Delegation to the DHCPv6 servers.

       prefix-delegation-interface <interface name>
       Specifies the name of the interface definition in radvd.conf
       that dhcp6c will write the ’prefix’ declaration for. By default,
       dhcp6c will write a radvd.conf prefix declaration for the interface
       on which it receives the prefix delegation lease.


EXAMPLES
       This is a sample of the dhcp6c.conf file.
       interface eth0 {
	    send rapid-commit;
	    request prefix-delegation;
	    request domain-name-servers;
	    request temp-address;
	    iaid 11111;
	    address {
		 3ffe:10::10/64;
		 prefer-life-time 6000;
		 valid-life-time 8000;
	    };
	    renew-time 11000;
	    rebind-time 21000;
       };


SEE ALSO
       Dynamic	Host  Configuration  Protocol  for IPv6 (DHCPv6), IPv6 Prefix
       Options for DHCPv6, dhcp6c(5)


AUTHORS
       Kazuo Hiekata <hiekata@yamato.ibm.com>





dhcp6c.conf			17 March 2003		       dhcp6c.conf(5)