Partial Use Of one Regions IP Block in another

George Bonser gbonser at
Thu May 20 17:19:39 UTC 2010

> -----Original Message-----
> From: joel jaeggli [mailto:joelja at]
> Sent: Thursday, May 20, 2010 10:05 AM
> To: Owen DeLong
> Cc: George Bonser; nanog at
> Subject: Re: Partial Use Of one Regions IP Block in another
> On 2010-05-20 09:36, Owen DeLong wrote:
> > We're scraping the bottom of the barrel for IPv4 space these days.
> > It is what it is, and it's only going to get worse in IPv4.  Time to
> go
> > to IPv6.
> in ipv6 we're using our arin /32 in all regions where we appear...
> joel

Exactly.  So migrating to v6 has no bearing on the conversation.  The
same "problem" (a problem which some people create themselves by relying
on the source IP to determine geographic location) exists with either
protocol.  There is just no way to tell where the device initiating the
conversation is located by looking at the IP and the extent to which you
can tell by where the traffic enters your network depends on the
temperature of the potato as perceived by the network downstream from
you.  Did they haul it across an ocean before handing it to you?

Geographical location by IP address is just plain nuts, but people will
find a way to sell anything, I suppose.


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