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docs: add info about IPv6 and DNS requirements for NTP/autoupdater

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This commit is contained in:
Matthias Schiffer 2016-04-19 05:54:19 +02:00
parent 271e864005
commit 9260a8fa15
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14
docs/user/faq.rst
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@ -1,3 +1,17 @@
Frequently Asked Questions
==========================
.. _faq-dns:
DNS does not work on the nodes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Gluon nodes will ignore the DNS server on the WAN port for evenything except
the mesh VPN, which can lead to confusion.
All normal services on the nodes exclusively use the DNS server on the mesh
interface. This DNS server must be announced in router advertisements (using
*radvd* or a similar software) from one or more central servers in meshes based
on *batman-adv*. If your mesh does not have global IPv6 connectivity, you can setup
your *radvd* not to announce a default route by setting the *default lifetime* to 0;
in this case, the *radvd* is only used to announce the DNS server.

6
docs/user/site.rst
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@ -46,6 +46,9 @@ ntp_server
ntp_servers = {'1.ntp.services.ffeh','2.ntp.services.ffeh'}
This NTP servers must be reachable via IPv6 from the nodes. If you don't want to set an IPv6 address
explicitly, but use a hostname (which is recommended), see also the :ref:`FAQ <faq-dns>`.
opkg : optional
``opkg`` package manager configuration.
@ -249,6 +252,9 @@ autoupdater : package
}
}
All configured mirrors must be reachable from the nodes via IPv6. If you don't want to set an IPv6 address
explicitly, but use a hostname (which is recommended), see also the :ref:`FAQ <faq-dns>`.
roles : optional
Optional role definitions. Nodes will announce their role inside the mesh.
This will allow in the backend to distinguish between normal, backbone and