Hello, I have one minor question. Some or most? DCCP implementations use SOCK_DCCP for dccp sockets. However, I found that some implementations already have another socket type which has similar concept: SOCK_CONN_DGRAM, although it has been used for ATM only and it is very rare to be seen. Do we need two similar socket types? Thanks, -- Yoshifumi Nishida nishida at csl.sony.co.jp