Networking requirements for IPv6 support

The Rational® Build Forge® system can run on Internet Protocol version 6 (IPv6) and mixed IPv6-IPv4 networks with some restrictions.

IPv6 support requires that your computers and network are configured correctly to support IPv6. Network configuration problems prevent host names and addresses that are specified from within the Build Forge® system from resolving correctly.

You must manually configure Rational® Build Forge® for IPv6. To do this, see Modifying httpd.conf.

Use the correct address format when you enter IP addresses in Build Forge®. In Build Forge®, administrators or users enter host names or IP addresses in only a few places:

The IPv4 and IPv6 addresses differ in format and length.

Avoiding localhost alias in /etc/hosts

On UNIX and Linux systems, if you use both IPv4 and IPv6, do not use localhost as an alias in /etc/hosts. Use a fully qualified domain name or IP address for the server.

If you must use localhost as a host name in /etc/hosts, it should define only the IPv4 address 127.0.0.1.

Components that do not support IPv6

Components that do not support IPv6 must be installed on a host computer with an IPv4 address. Install these components on a computer that has an IPv4 address:
  • Rational® License Key Server 8.1.3, the license server for Build Forge® Standard and Enterprise Editions that is included in product distribution.
    Note: To support IPv6 addresses, you must install Rational License Key Server 8.1.3. Obtain it from IBM® Rational Support or the IBM Rational Download and Licensing Center.
  • DB2® database: The PHP database drivers do not yet support IPv6.
  • MySQL database: The PHP database drivers do not yet support IPv6.
  • Oracle database other than 11g: The PHP database drivers do not yet support IPv6.

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