"With IPv6 it will be much easier to encrypt traffic, which disables legal intercept."

This bottleneck addresses the property of the IPv6 standard that IPSec should always be part of an IPv6-compliant implementation. Theoretically, a user can enable encryption with just a single mouse-click. The question is whether this will indeed lead to more traffic being encrypted. IPSec can also be used with IPv4 and if a user wants to hide his communications there are other means of encrypting.