I've also heard that WebTV users may also be on different IP addresses per each request. That means that a single session may actually be on many different IP addresses. This is just hearsay but it's something to consider.

__SIG__
use B;
printf "You are here %08x\n", unpack "L!", unpack "P4", pack
  "L!", B::svref_2object(sub{})->OUTSIDE;
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