I'm not sure where you have heard about this? Their DCTCP extensions have never been posted in the first place to a public list as of today. Pretty much all of

I'm not sure where you have heard about this? Their DCTCP extensions have never been posted in the first place to a public list as of today. Pretty much all of the core TCP developers for the (upstream) kernel's networking subsystem are employed by Google and doing an excellent job. That said, I would love to see their extensions integrated into the upstream tcp_dctcp module.