I just read a book about Athens history, and multiple times as the Greek city states were fighting each other, the truce/peace conditions were to mostly freeze the battle lines at the current line of contact, and maybe switch over a few forts/villages. Pretty similar to what I offered, and while I think Putin is evil, I do believe that Putin has offered multiple times to call a ceasefire at the current lines. Of course, we all know Putin would use a temporary reprieve to build up to attack again, which is why my proposal is not only to agree to a ceasefire at current lines of control, but also bring Ukraine immediately into NATO to prevent Putin from considering attacking again.