This is a discussion of the possible reasons for bringing into existence a Datagram Control Protocol, one which is intended for applications that require the connection semantics of TCP and SCTP (with SCTP's anti-DoS features) and need specialized congestion control, but which do not want TCP's in-order delivery and reliability semantics. The sort of applications which could make use of a DCP are those which have timing constraints on the delivery of data, such that reliable in-order delivery, when combined with congestion control, is likely to result in some information arriving at the receiver after it is no longer of use. Such applications might include streaming media and Internet telephony. Security related issues might also define the user of a DCP service.