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[#225] Updated arm

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doc/sphinx/arm/dhcp4-srv.rst
doc/sphinx/arm/dhcp4-srv.rst
    updated DDNS parameter doc

Added a ChangeLog entry
This commit is contained in:
Thomas Markwalder
2023-03-21 14:59:52 -04:00
parent 904f4d2611
commit 1880494948
5 changed files with 43 additions and 21 deletions
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20
doc/sphinx/arm/dhcp4-srv.rst
View File

@@ -3369,6 +3369,7 @@ DDNS-related parameters are split into two groups:
- ``ddns-qualifying-suffix``
- ``ddns-update-on-renew``
- ``ddns-use-conflict-resolution``
- ``ddns-ttl-percent``
- ``hostname-char-set``
- ``hostname-char-replacement``
@@ -3408,6 +3409,7 @@ The default configuration and values would appear as follows:
"ddns-qualifying-suffix": "",
"ddns-update-on-renew": false,
"ddns-use-conflict-resolution": true,
"ddns-ttl-percent": 0.75,
"hostname-char-set": "",
"hostname-char-replacement": ""
...
@@ -3492,14 +3494,18 @@ conflict with existing entries owned by other DHCPv4 clients.
reassigning either FQDNs or IP addresses. Doing so causes ``kea-dhcp4``
to generate DNS removal requests to D2.
.. note::
The DNS entries Kea creates contain a value for TTL (time to live). Since
Kea 1.9.3, ``kea-dhcp4`` calculates that value based on
`RFC 4702, Section 5 <https://tools.ietf.org/html/rfc4702#section-5>`__,
which suggests that the TTL value be 1/3 of the lease's lifetime, with
a minimum value of 10 minutes. In earlier versions, the server set the
TTL value equal to the lease's valid lifetime.
The DNS entries Kea creates contain a value for TTL (time to live). Since
Kea 1.9.3, ``kea-dhcp4`` calculates that value based on
`RFC 4702, Section 5 <https://tools.ietf.org/html/rfc4702#section-5>`__,
which suggests that the TTL value be 1/3 of the lease's lifetime, with
a minimum value of 10 minutes. In earlier versions, the server set the TTL value
equal to the lease's valid lifetime.
Kea 2.3.6 adds a new parameter, ``ddns-ttl-percent``. When specified
it causes the TTL to be calculated as a simple percentage of the lease's
life time, using the parameter's value as the percentage. It is specified
as a decimal percent (e.g. .25, .75, 1.00) and may be specified at the
global, shared-network, and subnet levels. By default it is unspecified.
.. _dhcpv4-d2-io-config:

20
doc/sphinx/arm/dhcp6-srv.rst
View File

@@ -2952,6 +2952,7 @@ DDNS-related parameters are split into two groups:
- ``ddns-qualifying-suffix``
- ``ddns-update-on-renew``
- ``ddns-use-conflict-resolution``
- ``ddns-ttl-percent``
- ``hostname-char-set``
- ``hostname-char-replacement``
@@ -2991,6 +2992,7 @@ The default configuration and values would appear as follows:
"ddns-qualifying-suffix": "",
"ddns-update-on-renew": false,
"ddns-use-conflict-resolution": true,
"ddns-ttl-percent": 0.75,
"hostname-char-set": "",
"hostname-char-replacement": ""
...
@@ -3075,14 +3077,18 @@ conflict with existing entries owned by other DHCPv6 clients.
reassigning either FQDNs or IP addresses. Doing so causes ``kea-dhcp6``
to generate DNS removal requests to D2.
.. note::
The DNS entries Kea creates contain a value for TTL (time to live). Since
Kea 1.9.3, ``kea-dhcp6`` calculates that value based on
`RFC 4702, Section 5 <https://tools.ietf.org/html/rfc4702#section-5>`__,
which suggests that the TTL value be 1/3 of the lease's lifetime, with
a minimum value of 10 minutes. In earlier versions, the server set the
TTL value equal to the lease's valid lifetime.
The DNS entries Kea creates contain a value for TTL (time to live). Since
Kea 1.9.3, ``kea-dhcp6`` calculates that value based on
`RFC 4702, Section 5 <https://tools.ietf.org/html/rfc4702#section-5>`__,
which suggests that the TTL value be 1/3 of the lease's lifetime, with
a minimum value of 10 minutes. In earlier versions, the server set the TTL value
equal to the lease's valid lifetime.
Kea 2.3.6 adds a new parameter, ``ddns-ttl-percent``. When specified
it causes the TTL to be calculated as a simple percentage of the lease's
life time, using the parameter's value as the percentage. It is specified
as a decimal percent (e.g. .25, .75, 1.00) and may be specified at the
global, shared-network, and subnet levels. By default it is unspecified.
.. _dhcpv6-d2-io-config: