> >> Not necessarily. When the CPE is configured through DHCP (or PPP?), > >> the ISP can send the secret. > > > > Which can be seen, in many cases, by other parties > > Who can see the packets sent from the local ISP to the CPE directly > connected to the ISP?
The NSA, FBI, CIA, DHS. Or, the ISP, the ISP's employees, contractors, sub-contractors. Or the phone company handling the PPPOE, L2TP, or whatever else. Or the WiFi sniffer on the street outside.
