The IPsec security framework has been enhanced in the Solaris 9 release to enable secure IPv6 datagrams between machines. For the Solaris 9 release, only the use of manual keys is supported when using IPsec for IPv6.
The IPsec security framework for IPv4 was introduced in the Solaris 8 release. The Internet Key Exchange (IKE) Protocol is available for IPv4.
For further information, see Chapter 19, IPsec (Overview), in System Administration Guide: IP Services.