[ppml] Big numbers

Michel Py michel at arneill-py.sacramento.ca.us
Wed Apr 9 23:34:33 EDT 2003


> Leo Bicknell wrote:
> That said, I've seen the drafts, and to a large extent (which
> is one of the reasons we're trying it) I don't see why an ISP
> can't set aside a /64 (so externally it looks like one proper
> block), but internally use it as /126's for P2P links.

True, but in the same topic there is no reason an ISP can't set aside a
/48 out of their /32 and internally use it as /64s for PTP links. Saving
1/65536th of one's address space is not a good enough reason to violate
established standards. Besides, what is it going to change in terms of
saving address space? Zero. Zip. Zilch. Nil. The address space allocated
to that ISP is still going to be a /32 and if the ISP does not have
enough space the fact that they can allocate only 65535 sites instead of
65536 does not change the timing of requesting another /32. Penny wise
and pound foolish this is.


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