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-rw-r--r--doc/user.rst21
1 files changed, 21 insertions, 0 deletions
diff --git a/doc/user.rst b/doc/user.rst
index 72e708ac3..039b06ea1 100644
--- a/doc/user.rst
+++ b/doc/user.rst
@@ -770,6 +770,8 @@ The :code:`music_directory` setting tells :program:`MPD` to read files from the
The database setting tells :program:`MPD` to pass all database queries on to the :program:`MPD` instance running on the file server (using the proxy plugin).
+.. _realtime:
+
Real-Time Scheduling
--------------------
@@ -1096,6 +1098,25 @@ The :program:`MPD` project runs a `forum <https://forum.musicpd.org/>`_ and an I
Common Problems
^^^^^^^^^^^^^^^
+Startup
+"""""""
+
+Error "could not get realtime scheduling"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+See :ref:`realtime`. You can safely ignore this, but you won't
+benefit from real-time scheduling. This only makes a difference if
+your computer runs programs other than MPD.
+
+Error "bind to '0.0.0.0:6600' failed (continuing anyway, because binding to '[::]:6600' succeeded)"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+This happens on Linux when :file:`/proc/sys/net/ipv6/bindv6only` is
+disabled. MPD first binds to IPv6, and this automatically binds to
+IPv4 as well; after that, MPD binds to IPv4, but that fails. You can
+safely ignore this, because MPD works on both IPv4 and IPv6.
+
+
Database
""""""""