PPPoE/v6 Administrator's Guide

IPv6 Support for PPP
Overview
Chapter 5 53
Overview
Point-to-Point Protocol (PPP) provides connectivity between individual
hosts used at remote location, including homes and small offices, to ISPs’
networks. It is also making an entry into the wireless domain where the
connectivity between devices and service providers is mostly through a
point-to-point connection.
The key function of the HP-UX PPPv6 software is to handle IPv6
datagrams in addition to IPv4 datagrams, and provide all the required
connectivity to end-users from a remote network.
Transport Optional Upgrade Release (TOUR) 1.0 includes IPv6 support
for PPP. The TOUR software is available as a web release on
http://www.software.hp.com.
The following lists the key features of PPPv6:
• Conformance to RFC 2472
• Changes to pppd
Conformance to RFC 2472
PPP now conforms to RFC 2472 - IPv6 over PPP. This RFC defines how
to transmit IPv6 packets over PPP links as well as the Network Control
Protocol (NCP) for establishing and configuring IPv6 over PPP. It also
describes how to form IPv6 link-local addresses on PPP links and to
negotiate the type compression protocol to be used for compressing or
decompressing IPv6 headers transmitted over serial lines.
New pppd Changes
The pppd daemon shipped with HP-UX 11.0 core operating system and
later, works with both PPPv4 and PPPv6. The daemon transmits IPv4 as
well as IPv6 datagrams over PPP links.
The following lists the changes to pppd:
• Two dedicated interfaces for IPv4 and IPv6.
• Number of pppd instances increased to 128 from 64.