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IPv4
Address Exhaustion
To
paraphrase Bono, there’s been a lot of talk about
IPv4 address exhaustion lately. Mainly, many too
much talk. Yes, the last major blocks of IPv4
addresses are being allocated this year. And yes, in
the regions of high demand – Asia, Europe, North
America – that’s going to be a problem sooner rather
than later. But proponents of IPv6 have been warning
us about this for nearly 20 years. Two questions
persist: whose problem is this, really, and when is
“soon”? (Or to quote Morrissey, how soon is now?)
The
current argument for IPv6 reminds me of the old
argument for investing your money in land: they
aren’t making any more of it [land/IPv4 addresses],
so scarcity is inevitable. But as the recent
economic collapse reminds us, just because something
seems like a good investment in the long run,
doesn’t mean it’s a good one in the short term.
Should the average company be investing time and
money in IPv6 in the short term?
That
brings us back to the question about whose problem
this is. First, rest assured that the internet
service providers – cable and phone companies – are
going to continue to provide internet connectivity
to their users. To the vast majority of the
population, nobody cares how they do it. But those
companies represent one group that needs to care.
Second,
in the technology world, compelling scenarios are
starting to emerge for IPv6 use in the large
enterprise. Thus, there is a competitive motivation
for software and hardware vendors who sell in that
space to ensure that their offerings are at least
compatible with IPv6. Mainstream network protocol
stacks make that easy to do, although it’s still
possible to screw it up at the application layer.
Thus,
continuing the real estate investment analogy, buy
property if you need a place to live. Otherwise, put
your extra time and money somewhere else.
Recent
blog posts on IPv6:
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