ISP customer assignments

Joel Jaeggli joelja at
Wed Oct 14 05:36:02 UTC 2009

Chris Adams wrote:
> I guess I'm missing something; what in section 3 is this referring to?
> I can understand /64 or /126 (or maybe /124 if you were going to
> delegate reverse DNS?), but why /112 and "16 bits for node identifiers"
> on a point-to-point link?

It falls on a 16 bit boundry and is therefore easy to read. some
numbering concessions within a vast space exist for the convenience of
the poor humans not the machines. I can pick out the host side of the
address in a /64 no problem but for some reason I have a trouble finding
subnet boundaries on a series of /93s.

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