[ih] Why did DCCP fail to gain traction?

Carsten Schiefner carsten at schiefner.berlin
Sat Oct 3 10:29:34 PDT 2026


Small nit picking if I may, John...?

It's RFC 43_4_0:

RFC 4340: Datagram Congestion Control Protocol (DCCP)
https://www.rfc-editor.org/info/rfc4340/

I stumbled over RFC 4330:

RFC 4330: Simple Network Time Protocol (SNTP) Version 4 for IPv4, IPv6 
and OSI
https://www.rfc-editor.org/info/rfc4330/

and was pretty sure that this is quite obviously *not* it.

Best,

	-C.

On 03.10.2026 18:26, John Kristoff via Internet-history wrote:
> DCCP (IETF RFC 4330) is/was a relatively new transport in Internet
> history. I don't think it ever really saw much, if any, deployment or
> support in applications. It was removed from the Linux kernel last year.
> 
> Was it too late, too complex, too little, or just deemed unnecessary
> given available alternatives such as QUIC?  I don't recall seeing
> much discussion about why it failed to gain traction and I'm interested
> to hear what the collective wisdom of this group might have to say about
> that.
> 
> John


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