Siemens SCALANCE XM-400 Configuration Manual page 52

Description
2.6 Interface identifiers and addresses
IPv6 prefix
Specified in: RFC 4291
The IPv6 prefix represents the subnet identifier.
Prefixes and IPv6 addresses are specified in the same way as with the CIDR notation
(Classless Inter-Domain Routing) for IPv4.
Design
IPv6 address / prefix length
Example
IPv6 address: 2001:0db8:1234::1111/48
Prefix: 2001:0db8:1234::/48
Interface ID: ::1111
Entry and appearance
The entry of IPv6 addresses is possible in the notations described above. IPv6 addresses
are always shown in the hexadecimal notation.
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SCALANCE XM-400/XR-500 Command Line Interface (CLI)
Configuration Manual, 06/2016, C79000-G8976-C252-11