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Some specified options rely on NETFILTER_XTABLES_LEGACY to be enabled. IP_NF_TARGET_TTL for instance depends on IP_NF_MANGLE which in turn depends on IP_NF_IPTABLES_LEGACY -> NETFILTER_XTABLES_LEGACY. Enable relevant iptables config options explicitly, this is needed to avoid breakage when symbols related to iptables-legacy will depend on NETFILTER_LEGACY resp. IP_TABLES_LEGACY. This also means that the classic tables (Kernel modules) will not be enabled by default, so enable them too. Signed-off-by: Florian Westphal <fw@strlen.de> [bigeasy: Split out the config bits from the main patch] Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.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 reStructuredText 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.