From: Mark Wooding <mdw@distorted.org.uk>
Date: Fri, 23 Mar 2012 16:02:25 +0000 (+0000)
Subject: functions.m4, classify.m4: Handle negative address ranges.
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/firewall/commitdiff_plain/1264e9177da9fb94a1fb85853220dd69a7108f0a?hp=1264e9177da9fb94a1fb85853220dd69a7108f0a

functions.m4, classify.m4: Handle negative address ranges.

That is, a network can explicitly exclude an address range.  Ranges are
checked in order, so you carve out a hole in the middle of a range by
putting a negative range first for the hole first, and the big network
afterwards.

This involves a fairly major rearrangement of the address classification
machinery.  Again.
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