Yesterday's Windows update causes IPv4 to be default

[Phil Mayers]

On 11/19/2012 03:26 AM, Christopher Palmer wrote:
> Networks with captive portals are exempt from the change. Once/if the
> user escapes the portal (by paying for service or whatever), than the
> heuristic will take effect as described.
>

What does windows consider a captive portal, and what does it consider 
an escape?

It would be really good if there was a low-level description of all the 
intelligence in the newer versions of the windows IP stack - detailed, 
with state diagrams and transition conditions, per-product notes, etc.