vyos/vyos-documentation
1
0
Fork 0
mirror of https://github.com/vyos/vyos-documentation.git synced 2025-10-26 01:31:44 +02:00
Code Issues Packages Projects Releases Wiki Activity

T6773: dhcp-server: ddns: Reflect recent configuration language changes

Browse Source
This commit is contained in:
Alex Bukharov 2024-11-30 14:48:44 +11:00
parent aef21ce894
commit 317a44f274
1 changed files with 21 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
docs/configuration/service/dhcp-server.rst
View File

@ -186,28 +186,38 @@ server with RFC-2136 DDNS support.
These settings can be configured on the global level and overridden on the scope
level, i.e. for individual shared networks or subnets. See examples below.
.. cfgcmd:: set service dhcp-server dynamic-dns-update force-updates
.. cfgcmd:: set service dhcp-server dynamic-dns-update send-updates [ enable
| disable ]
If set on global level, updates for all scopes will be enabled, except if
explicitly disabled on the scope level. If unset, updates will only be sent for
scopes, where ``force-updates`` is explicity enabled.
If set to ``enable`` on global level, updates for all scopes will be enabled,
except if explicitly set to ``disable`` on the scope level. If set to ``disable``,
updates will only be sent for scopes, where ``send-updates`` is explicity
set to ``enable``.
.. cfgcmd:: set service dhcp-server dynamic-dns-update force-no-update
This model is followed for a few behavioral settings below: if the option is
not set, the setting is inherited from the parent scope. You can override the
parent scope setting by setting the option explicitly.
VyOS will ignore client request to not update DNS records and send DDNS
.. cfgcmd:: set service dhcp-server dynamic-dns-update force-update [ enable
| disable ]
VyOS will ignore client request not to update DNS records and send DDNS
update requests regardless.
.. cfgcmd:: set service dhcp-server dynamic-dns-update force-client-update
.. cfgcmd:: set service dhcp-server dynamic-dns-update force-update-both [ enable
| disable ]
VyOS will override client DDNS request settings and always update both
forward and reverse DNS records.
.. cfgcmd:: set service dhcp-server dynamic-dns-update update-on-renew
.. cfgcmd:: set service dhcp-server dynamic-dns-update update-on-renew [ enable
| disable ]
Issue DDNS update requests on DHCP lease renew. In busy networks this may
generate a lot of traffic.
.. cfgcmd:: set service dhcp-server dynamic-dns-update use-conflict-resolution
.. cfgcmd:: set service dhcp-server dynamic-dns-update conflict-resolution [ enable
| disable ]
Use RFC-4703 conflict resolution. This algorithm helps in situation when
multiple clients reserve same IP addresses or advertise identical hostnames.
@ -295,8 +305,8 @@ Global configuration you will most likely want:
.. code-block:: none
set service dhcp-server dynamic-dns-update force-updates
set service dhcp-server dynamic-dns-update use-conflict-resolution
set service dhcp-server dynamic-dns-update send-updates enable
set service dhcp-server dynamic-dns-update conflict-resolution enable
Override the above configuration for a shared network NET1: