RFC DocumentsRFC 5952 - A Recommendation for IPv6 Address Text Representation4.2.1. Shorten as Much as Possible (So viel wie möglich kürzen)On this page4.2.1. Shorten as Much as Possible (So viel wie möglich kürzen)4.2.1. Shorten as Much as Possible (So viel wie möglich kürzen) This compatibility page keeps the RFC 5952 subsection link available. The subsection material is included in '4.2. .