IPv6 Release Notes

enable applications to specify the source filters to the underlying IGMPv3 and MLDv2
protocols.
Feature in the B.11.31.0803 Version of IPv6
The B.11.31.0803 version of the IPv6Upgrade bundle supported the privacy extension
to IPv6 auto-configuration feature, which is based on RFC 4941 (Privacy Extensions for
Stateless Address Autoconfiguration in IPv6). All the IPv6 addresses of an interface formed
using the stateless address autoconfiguration mechanism have the same interface
identifier generated from the IEEE identifier of the interface. The constant interface
identifier in multiple addresses enable information collectors to correlate multiple
activities with different addresses to the same node. RFC 4941 defines privacy extensions
for stateless address autoconfiguration to address this concern. RFC 4941 defines a
mechanism to generate global scoped addresses with randomized interface identifiers
that change over a period of time. The interface identifiers changing over a period of
time make it more difficult for information collectors to associate different addresses
to the same node.
New ndd Tunables
The following new tunables are introduced to enable the new functionalities released
in various IPv6Upgrade bundles:
NOTE: For detailed information on these tunables, see the help text for the ndd
command or the HP-UX IPv6 Transport Administrator's Guide.
The ip6_nd_use_temp_address, ip6_nd_temp_valid_lifetime,
ip6_nd_temp_preferred_lifetime, and ip6_nd_prefer_temp_address
tunables are introduced in the B.11.31.0803 release of the IPv6Upgrade bundle. The
remaining tunables are introduced in the B.11.31.0809 release of the IPv6Upgrade
bundle.
ip6_enable_rfc4291
Enables the RFC 4291 functionality. The default
value of this tunable is 0, which provides the RFC
2373 functionality.
NOTE: The IPv6Upgrade bundle sets this
tunable to 1 to enable the RFC 4291 functionality.
ip6_mld_version
Controls the MLD protocol version used by the
system. The default value of this tunable is 1.
10 IPv6 Release Notes