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[ Upstream commitaea23c323d] Thomas reported a regression with IPv6 and anycast using the following reproducer: echo 1 > /proc/sys/net/ipv6/conf/all/forwarding ip -6 a add fc12::1/16 dev lo sleep 2 echo "pinging lo" ping6 -c 2 fc12:: The conversion of addrconf_f6i_alloc to use ip6_route_info_create missed the use of fib6_is_reject which checks addresses added to the loopback interface and sets the REJECT flag as needed. Update fib6_is_reject for loopback checks to handle RTF_ANYCAST addresses. Fixes:c7a1ce397a("ipv6: Change addrconf_f6i_alloc to use ip6_route_info_create") Reported-by: thomas.gambier@nexedi.com Signed-off-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.