2.2.1.26 MS-User-IPv6-Address
MS-User-IPv6-Address is a VSA used to specify the IPv6 address of the endpoint as known to the RADIUS client, as specified in section 2.2.1.
The fields of MS-User-IPv6-Address MUST be set as follows:
Vendor-Type: An 8-bit unsigned integer that MUST be set to 0x3E.
Vendor-Length: An 8-bit unsigned integer that MUST be set to 18.
Attribute-Specific Value: A 128-bit unsigned integer in network byte order that MUST specify the IPv6 address of the machine of the user requesting network access.