The operating system and network infrastructure (for example, DNS server, router, switches) support Internet Protocol Version 6.
For more information about further operating system prerequisites, see 1346768 .
You can configure an instance of an SAP system for IPv6. It is not important whether the instance has type AS ABAP, AS Java, or ABAP+Java (Dual-Stack)
SAP recommends that either all or none of the instances belonging to an SAP system are configured for IPv6. Otherwise communication problems in the internal systems could occur. Refer to the network guide for further information.
If the environment variable is not set or SAP_IPv6_ACTIVE=0 , IPv6 is deactivated. Network communication through IPv6 is then not possible.
For more information, see the Java documentation http://java.sun.com/j2se/1.5.0/docs/guide/net/ipv6_guide/index.html.