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[ Upstream commit2738d9d963] Fixes sporadic IPv6 packet loss when flow offloading is enabled. IPv6 route GC and flowtable GC are not synchronized. When dst_cache becomes stale and a packet passes through the flow before the flowtable GC teardowns it, the packet can be dropped. So, it is necessary to check dst every time in packet path. Fixes:227e1e4d0d("netfilter: nf_flowtable: skip device lookup from interface index") Signed-off-by: Ritaro Takenaka <ritarot634@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.