Chapter 16 • IPv6 Autoconfiguration 283
by linking their licenses to the CPU ID of a single computer. Microsoft
has taken similar steps in terms of limiting how their software is installed,
even when it is being installed to recover from disk crashes on the originally
licensed system.
A constituency of privacy advocates, possibly with reinforcements from
anti-IPv6 parties, noted that the same potential for misuse of any static and
system-specific identifier, including the modified EUI-64 identifiers used
in IPv6, exists.
The resultant uproar, with headlines like “IPv6 Extinguishes Privacy,” gen-
erated a response in the form of RFC 3041, “Privacy Extensions for Stateless
Address Autoconfiguration in IPv6,” which suggests an alternate method
for generating