Дано – Solaris 10 , OSol 11 b75 . Надо запретить полностью IPV6 … Курил-курил … Накурил :

NOTES
When displaying interface information, netstat honors the
DEFAULT_IP setting in /etc/default/inet_type. If it is set
to IP_VERSION4, then netstat will omit information relating
to IPv6 interfaces, statistics, connections, routes and the
like.

However, you can override the DEFAULT_IP setting in
/etc/default/inet_type on the command-line. For example, if
you have used the command-line to explicitly request IPv6
information by using the inet6 address family or one of the
IPv6 protocols, it will override the DEFAULT_IP setting.

Завершает начатое 😉