Not sure that the Port (Ouistreham) is as not actually in Caen.
Travelling there tomorrow (16th Feb.) and will update as to whether the Caen Circular road is included or just Caen Centre, which seems more likely.
Seems safe to assume ALL main Towns/Cities will gradually be included.
From this info gleaned on Motorhome site it seems the Caen Ring road is OK. If not it would be virtually impossible to get into France using that ferry.
Le Mans historic cars would in effect be banned coming from UK by that route.
I couldn't get a sticker of any description for my 1965 car, unlike UK where Historic cars are exempt.
Le Havre is also now a restricted Zone.