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RFC 8910
Title: Captive-Portal Identification in DHCP and
Router Advertisements (RAs)
Author: W. Kumari,
E. Kline
Status: Standards Track
Stream: IETF
Date: September 2020
Mailbox: [email protected],
[email protected]
Pages: 11
Obsoletes: RFC 7710
Updates: RFC 3679
I-D Tag: draft-ietf-capport-rfc7710bis-10.txt
URL: https://www.rfc-editor.org/info/rfc8910
DOI: 10.17487/RFC8910
In many environments offering short-term or temporary Internet access
(such as coffee shops), it is common to start new connections in a
captive portal mode. This highly restricts what the user can do until
the user has satisfied the captive portal conditions.
This document describes a DHCPv4 and DHCPv6 option and a Router
Advertisement (RA) option to inform clients that they are behind some
sort of captive portal enforcement device, and that they will need to
satisfy the Captive Portal conditions to get Internet access. It is
not a full solution to address all of the issues that clients may
have with captive portals; it is designed to be one component of a
standardized approach for hosts to interact with such portals. While
this document defines how the network operator may convey the captive
portal API endpoint to hosts, the specific methods of satisfying and
interacting with the captive portal are out of scope of this
document.
This document replaces RFC 7710, which used DHCP code point 160. Due
to a conflict, this document specifies 114. Consequently, this
document also updates RFC 3679.
This document is a product of the Captive Portal Interaction Working Group of
the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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