Internet Protocol version 6 (IPv6) enables communication of data between ICT systems within a network, such as the internet. The standard specifies that any ICT system within the network has a unique number (IP address) has. The main motivation for the development of IPv6 was to increase the amount of available addresses compared to the present standard predecessor IPv4. Caution: To ensure maximum interoperability has Standardisation Board 'comply or explain' declared applicable to the combination of IPv4 and IPv6. An organization must therefore ask both versions with the purchase of a ICT-product/-dienst. Functional area of application: XML, transformation Organisational scope: N.A.