12. 今後定義したい項目
From the Charter
Allow endpoints to discover that they are in this sort of limited
environment
Provide a URL to interact with the Captive Portal
Allow endpoints to learn about the parameters of their confinement
Interact with the Captive Portal to obtain information such as status
and remaining access time
(Optional) Advertise a service whereby devices can enable or
disable access to the Internet without human interaction
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