[ic] IPs that change with every access

Frank Reitzenstein frank at goldissue.com
Sat Jun 23 20:17:51 EDT 2007

Carl Bailey wrote:

> Kevin Walsh <kevin at cursor.biz> wrote:
>> Grant <emailgrant at gmail.com> wrote:
>>> I was looking at [env HTTP_COOKIE] at it looks like my MV_SESSION_ID
>>> cookie is composed of my session ID and my IP address.  I've been
>>> studying my logs a lot lately, and there are a fair amount of accesses
>>> made by IP addresses that change with every access, usually just the
>>> end portion of the IP address.  Most of these accesses are clearly
>>> robots, but some of them are clearly not.  Is IC able to keep track of
>>> a user's session properly when their IP changes with each access?
>> Ordinary users should not change their IP address with every request.
>> Spiders might do this, but they should be recognised by the Robot*
>> directives.
>> Users who use a proxy cluster might present themselves from a different
>> IP address every now and again.  Similarly, Also, if a user's ISP has a
>> weird DHCP setup then it might give the user a new IP address, rather
>> than renew the existing lease, but you shouldn't see that very often
>> in a normal browsing session.
> Yet we see this all the time, primarily from users of AOL, who
> presumably all utilize a proxy cluster.  That makes it a far more
> common occurrence indeed, at least here in the states ;)
> That said, without changing the IC configuration, I have tested this
> situation by modifying the cookie in my browser, so that the IP
> address part no longer matches my actual IP address.  As long as the
> session ID part is constant Interchange does not seem to mind, and the
> session behaves normally, all the way through checkout.   
> Carl
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Hello Carl,

I have seen it many times even here in AU. At times I have written
applications to track users from arrival to checkout, and the multiple
IP addresses are confusing,



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