The DCCP Protocol (EXPERIMENTAL)

modulename: dccp.ko

configname: CONFIG_IP_DCCP

Linux Kernel Configuration
└─>Networking
└─>Networking options
└─>The DCCP Protocol (EXPERIMENTAL)
In linux kernel since version 2.6.14 (release Date: 2005-10-27)  
Datagram Congestion Control Protocol (RFC 4340)

From http://www.ietf.org/rfc/rfc4340.txt:

The Datagram Congestion Control Protocol (DCCP) is a transport
protocol that implements bidirectional, unicast connections of
congestion-controlled, unreliable datagrams. It should be suitable
for use by applications such as streaming media, Internet telephony,
and on-line games.

To compile this protocol support as a module, choose M here: the
module will be called dccp.

If in doubt, say N.

source code:

depends
CONFIG_EXPERIMENTAL
CONFIG_INET
CONFIG_NET

is selected by
CONFIG_IP_DCCP_CCID3