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[ Upstream commit74c12c630f] As the kernel doc describes too the code is supposed to skip adding multicast TT entries if both the WANT_ALL_IPV4 and WANT_ALL_IPV6 flags are present. Unfortunately, the current code even skips adding multicast TT entries if only either the WANT_ALL_IPV4 or WANT_ALL_IPV6 is present. This could lead to IPv6 multicast packet loss if only an IGMP but not an MLD querier is present for instance or vice versa. Fixes:687937ab34("batman-adv: Add multicast optimization support for bridged setups") Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.