From: Mark Wooding <mdw@distorted.org.uk>
Date: Sun, 11 Mar 2012 16:30:08 +0000 (+0000)
Subject: bookends.m4: Optimize checking for forwarding IPv6 link-local multicast.
X-Git-Url: https://git.distorted.org.uk/~mdw/firewall/commitdiff_plain/e6d64b676e9da834e9b0f6243a01e4362202b840?hp=e6d64b676e9da834e9b0f6243a01e4362202b840

bookends.m4: Optimize checking for forwarding IPv6 link-local multicast.

Apply a coarse filter to detect all multicast, and dispatch to a
finer-grained one to detect link-local multicast addresses.  This
would be much easier if the flags and scope fields were the other way
around.

Also fix it to use the correct address range.
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