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a2acf0c0e2
There are now at least three distinct flavours of netcat/nc tool: 'original' version, one version ported from openbsd and nmap-ncat. The script only works with original because it sets SOREUSEPORT option. Other nc versions return 'port already in use' error and port shadow test fails: PASS: inet IPv6 redirection for ns2-hMHcaRvx nc: bind failed: Address already in use ERROR: portshadow test default: got reply from "ROUTER", not CLIENT as intended Switch to socat instead. Reported-by: kernel test robot <oliver.sang@intel.com> Signed-off-by: Florian Westphal <fw@strlen.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 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.