2001-02-17 06:56:00 -05:00
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Takes a list of prefixes in conventional format on stdin, and performs two
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optimisations to attempt to reduce the length of the prefix list.
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The first optimisation is to remove any supplied prefixes which are
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2003-03-02 00:35:10 -05:00
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superfluous because they are already included in another supplied prefix.
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2001-02-17 06:56:00 -05:00
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For example, 203.97.2.0/24 would be removed if 203.97.0.0/17 was also
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supplied.
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The second optimisation identifies adjacent prefixes that can be combined
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under a single, shorter-length prefix. For example, 203.97.2.0/24 and
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203.97.3.0/24 can be combined into the single prefix 203.97.2.0/23.
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