HP-UX IPv6 Transport Administrator's Guide for TOUR 1.0

Configuration
Stateless Autoconfiguration
Chapter 316
Configuring Secondary Interfaces
If an IPv6 router that advertises network prefixes resides on the LAN, a
secondary interface is automatically configured after the primary
interface comes up. IPv6 builds additional secondary interfaces for each
network prefix advertised.
If you manually configure a link-local address for the primary interface,
then autoconfigured secondary addresses are derived from the interface
identifier part of the manually configured address for the primary
interface.
For example, if an IPv6 router on the LAN advertises two prefixes (such
as fec0::/64 and 2000::/64), HP-UX 11i IPv6, bundled as part of
TOUR 1.0, configures two secondary interfaces.
Configuring Route Information
HP-UX 11i IPv6, bundled as part of TOUR 1.0, automatically configures
network routes based on the prefix information received from an IPv6
router. HP-UX 11i IPv6, bundled as part of TOUR 1.0, automatically
adds the router to its list of default gateways if the router advertises a
non-zero router-lifetime value.