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If the interface is a bridge or Open vSwitch port, and we can't forward a packet because it exceeds the local PMTU estimate, trigger an ICMP or ICMPv6 reply to the sender, using the same interface to forward it back. If metadata collection is enabled, set destination and source addresses for the flow as if we were receiving the packet, so that Open vSwitch can match the ICMP error against the existing association. v2: Use netif_is_any_bridge_port() (David Ahern) Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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.