HP-UX IPv6 Transport Administrator's Guide for TOUR 2.0 (April 2004, rev 2)

Features Overview
IPv6 Transport (bundled as part of TOUR 2.0)
Chapter 1 7
• IPv6/IPv4 Dual Stack support: HP-UX 11i v2 IPv6 supports both
IPv4 and IPv6 applications. Programmers can write IPv6
applications that communicate with both IPv6 and IPv4 peers.
Existing IPv4 applications do not need to be modified.
• IPv6 tunneling enables IPv6/IPv4 hosts and routers to connect with
other IPv6/IPv4 hosts and routers over the existing IPv4 network.
IPv6 tunneling encapsulates IPv6 datagrams within IPv4 packets.
The encapsulated packets travel across an IPv4 network until they
reach their destination host or router. The IPv6-aware host or router
decapsulates the IPv6 datagrams, forwarding them as needed. IPv6
tunneling eases IPv6 deployment by maintaining compatibility with
the large existing base of IPv4 hosts and routers.
• Fully supports Ethernet Links and FDDI links.
• MC/ServiceGuard Enablement for IPv6 support.
• IPv6 Stateless Address Autoconfiguration.
• IPv6 Neighbor Discovery.
• TCP/UDP over IPv6, PMTUv6, ICMPv6, IPv6 MIBs and Sockets
APIs.
• Network Configuration and Troubleshooting Utilities for both IPv4
and IPv6: ifconfig, netstat, ping, route, ndd, ndp
(neighbor-discovery command for IPv6 only) and traceroute. There
have also been enhancements to nettl and netfmt for IPv6 tracing
and formatting.
• The netconf-ipv6 file stores IPv6 settings. The
/etc/rc.config.d/netconf-ipv6 configuration file stores IPv6
configuration information similar to IPv4’s
/etc/rc.config.d/netconf file.
• The /etc/hosts file now supports IPv6 and IPv4 addresses. The
/etc/hosts file contains IP addresses and corresponding host
names. The file can contain IPv4 and IPv6 addresses for the same
host. Lookup policies are identical to IPv4. For example:
15.15.15.15 hpindon
3ffe:1111::1234 hpindon hpindon6
• Name Service Switch: /etc/nsswitch.conf is a configuration file
for the name service switch. The ipnodes entity specifies which
name services resolve IPv6 addresses and host names. Refer to the
nsswitch.conf(4) man page for more information.