HP-UX IPv6 Transport Administrator Guide HP-UX 11i v3 (5992-6426, May 2013)

This subsection describes how to edit the /etc/hosts file to add an IPv6 address and
host name for the network interface you are configuring.
NOTE: If using the name service DNS over IPv6, add the IP address and host name to
the appropriate databases on the name server system. Refer to BIND v9.2.0 (or later)
documentation on http://www.docs.hp.com for more information on DNS over
IPv6.
The /etc/hosts file associates IP host addresses with mnemonic host names and alias
names. It contains the names of other nodes in the network with which your system can
communicate.
An example/etc/hosts file ships with HP-UX 11i v3.
Example Host Name Entry
The example below shows how a system with the name, host3, might be referenced in
the /etc/hosts file:
System name in swinstall screen: host3
/etc/hosts file:
2001:db8::230:6eff:fe04:d9ff host3 host3.site2.region4
192.1.2.34 hpfcrm loghost
NOTE: HP-UX 11i IPv6 is a dual stack implementation. A single host name can have
entries for both an IPv6 address and an IPv4 address in /etc/hosts.
Name and Address Lookup for IPv6
/etc/nsswitch.conf (nsswitch.conf(4)) is a configuration file for the name
service switch. The ipnodes entity specifies which name services resolve IPv4 and IPv6
addresses and host names on HP-UX 11i IPv6 transport.
The ipnodes keyword specifies the resolver policy for the library functions
getnameinfo(3N), getaddrinfo(3N), getipnodebyname(3N) and
getipnodebyaddr(3N) for both IPv4 and IPv6 addresses. The existing keyword
“hosts” specifies the resolver policy for the library functionsgethostbyname() and
gethostbyaddr() for IPv4 addresses.
NOTE: Internet Services applications (such as telnet, r-commands, etc.) use these
library functions to resolve IPv4 and IPv6 addresses.
By default, the /etc/nsswitch.conf is not on the system. The default ipnodes policy
(same as default hosts policy) is as follows:
dns [NOTFOUND=return] files
This policy implies that dns is the authoritative resolver and will only try files if dns
is down. If dns is available but returns NOTFOUND, the search stops.
32 Configuration