nanog mailing list archives

Re: ISP customer assignments


From: Joel Jaeggli <joelja () bogus com>
Date: Tue, 13 Oct 2009 22:36:02 -0700

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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