openstack/neutron
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Update docs for disabling DNS server announcement

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The functionality allowing to disable DNS server announcement from the
DHCP agent for certain subnets was introduced in [0]. We should mention
this feature in the corresponding documentation.

[0] https://review.openstack.org/495781

Change-Id: I4adfa7ba789a59f967297ebb6c571deb0652c7ca
Related-Bug: 1311040
(cherry picked from commit 698e6d475c)
This commit is contained in:
Jens Harbott 2018-10-31 15:36:04 +00:00 committed by Slawek Kaplonski
parent dbd3f7e7e8
commit ac490d7d99
1 changed files with 4 additions and 0 deletions
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4
doc/source/admin/config-dns-res.rst
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@ -73,6 +73,10 @@ one DNS resolver, repeat the option multiple times.
You can use this option in combination with the previous one in order
to replace all existing DNS resolver addresses with new ones.
You can also set the DNS resolver address to ``0.0.0.0`` for IPv4 subnets,
or ``::`` for IPv6 subnets, which are special values that indicate to the
DHCP agent that it should not announce any DNS resolver at all on the subnet.
.. note::
When DNS resolvers are explicitly specified for a subnet this way, that
setting will take precedence over the options presented in case 2.