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The error message "Cannot find parent device" was shown for users of macvtap (on batadv devices) whenever the macvtap was moved to a different netns. This happens because macvtap doesn't provide an implementation for rtnl_link_ops->get_link_net. The situation for which this message is printed is actually not an error but just a warning that the optional sanity check was skipped. So demote the message from error to warning and adjust the text to better explain what happened. Reported-by: Leonardo Mörlein <freifunk@irrelefant.net> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.