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dhcp6c.conf(5) 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-delega-
tion) in this file. dhcp6c.conf is an ASCII text file and lines that start with # are comments.
STATEMENTS
interface <interface name>
{
[declarations]
};
Write configurations for this interface in this statement. In [declarations], 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 perform a Rapid Commit.
request [dhcpoptions];
This declaration enables dhcp6c to request specified options. Currently temp-address, domain-name-servers, and pre-
fix-delegation are defined.
request domain-name-servers;
The DHCPv6 mechanism provides a way to obtain configuration information such as a list of available DNS servers or NTP
servers. This declaration enables dhcp6c to request a DNS server address from the DHCPv6 server.
request domain-search-list;
This declaration enables dhcp6c to request a domain search list which dhcp6c uses when resolving hostnames with DNS.
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 information from the DHCPv6 server. If dhcp6c doesn't need
to be assigned any addresses, this option should be specified.
default-information-refresh-time <information refresh time>;
This declaration defines the default interval to refresh the host configuration information retrieved from a server. When
a server offers an interval to dhcp6c, dhcp6c chooses the interval from server. If this declaration is not specified, the
interval is 86400[sec] (24 hours). The minimum interval is 400[sec]. If you don't want to refresh the information, spec-
ify infinity as the interval.
maximum-information-refresh-time <information refresh time>;
This declaration defines the maximum interval to refresh the host configuration information retrieved from a server. When
DHCPv6 server offers an interval which is bigger than this maximum interval, dhcp6c chooses this maximum interval. If
this declaration is not specified, dhcp6c uses the interval which a server offered or the interval which is specified at
default-information-refresh-time declaration.
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 declarations.
renew-time <renew-time>;
This declaration specifies the Renew Time (in seconds) for this Identity 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
dhcp6c(8)
BUGS
Report bugs via http://fedorahosted.org/dhcpv6/
AUTHORS
See http://fedorahosted.org/dhcpv6/wiki/Authors
dhcp6c.conf(5)
