You do not solve the problem of traceability with packet switching.

Regarding eduroam your comment is incorrect. Most 802.1x auth in universities with eduroam use peap+mschapv2 which is a serious security issue (md4 nt hash). It is way too cumbersome to configure eap-tls and certificates. There are ways to get around it with passpoint/hotspot 2.0 provisionning but this is far from being supported on devices.