Re: [Shutup] [ietf-smtp] Proposed Charter for something

Richard Clayton <> Thu, 10 December 2015 16:57 UTC

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Date: Thu, 10 Dec 2015 16:56:29 +0000
To: Martijn Grooten <>
From: Richard Clayton <>
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Subject: Re: [Shutup] [ietf-smtp] Proposed Charter for something
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In message <>et>, Martijn Grooten
<> writes

>And how much does the actual IP address matter, as opposed
>to a "cryptographic blob" of said address, that can be "decrypted" by
>the ISP and is constant for some time for a given (user,IP) combination.

an IP address generally indicates the ISP and country of origin (but
there's a number of edge cases)

for many individuals there is only a short-term linkage between
themselves and the IP address (think dialup, DHCP systems for broadband
and carrier grade NAT solutions for mobile) so you can seldom use it for
long-term tracking of activity ("what else has this person done")

- -- 
richard                                                   Richard Clayton

Those who would give up essential Liberty, to purchase a little temporary 
Safety, deserve neither Liberty nor Safety. Benjamin Franklin 11 Nov 1755

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