Technical References

See Also
policy
Attributes
backup-server-addr ipaddr
Specifies the backup DNS server address that receives DNS updates
if the server specified in server-addr is down.
backup-server-key nameref(Key)
Specifies the TSIG key used to process all dynamic DNS updates for
backup-server-addr.
dns-host-bytes rangeint(1-4)
Sets the number of bytes in a lease IP address to use when forming
in-addr.arpa names. The server forms names in the in-addr.arpa zone
by prepending these bytes of the address (in reverse order) to the
reverse zone name. If unset, the server synthesizes an appropriate
value based on the scope?s subnet size.
dynamic-dns enumbyt default = update-all
Controls whether the DHCP server should attempt to update a
DNS server with the name and address information from leases
that are granted to requesting clients.
force-dns-updates bool default = false
Determines whether the DHCP server retries a dynamic DNS update
whenever a client renews its lease, even if DHCP thinks that the
update has already been completed successfully.
forward-zone-name dname
Designates the DNS forward zone used to add a DHCP client host name
(A record).
host-name-generator expr
Defines an expression that evaluates to the synthesized host name
to be used. If undefined or the expression returns "", the
configured host name synthesis is used. If the expression returns
a null value, no host name will be used.
max-dns-ttl time
Indicates the maximum number of seconds the DHCP server keeps DNS
records it acquired through dynamic updates. This value sets a
a ceiling (or time to live) on how long to keep DNS updates.
When the DHCP server adds a DNS record, it uses a TTL of one
third the lease time if it is between min-dns-ttl and
max-dns-ttl values. If one third of the lease time is greater
than max-dns-ttl, the TTL value is set to max-dns-ttl.
When this value is unset, the DHCP server max-dns-ttl setting
will apply.
min-dns-ttl time