[aboardRat4]

In the new standard every publicly routable packet will include a cryptographically signed passport number of the responsible person.

Then the government could, for example, limit criminals' access to the internet by mandating that their packets be dropped on most major ISPs, or at least deprioritised.

[jandrese]

Funny enough I actually looked at a scheme for corporate networks where your personal corporate ID is encoded as part of the host bits of the IPv6 packet and policy could be applied based on who you are instead of what machine it is (or both). It was kind of neat but the complexity was too high for it to gain traction, and also it turns out that most corporate networks are allergic to IPv6 and government networks doubly so.