On Fri, Jun 24, 2016 at 2:36 PM, Rick Jones <rick.jon...@hpe.com> wrote: > On 06/24/2016 02:12 PM, Tom Herbert wrote: >> >> The client OS side is only part of the story. Middlebox intrusion at >> L4 is also a major issue we need to address. The "failure" of TFO is a >> good case study. Both the upgrade issues on clients and the tendency >> for some middleboxes to drop SYN packets with data have together >> severely hindered what otherwise should have been straightforward and >> useful feature to deploy. > > > How would you define "severely?" Has it actually been more severe than for > say ECN? Or it was for say SACK or PAWS? > ECN is probably even a bigger disappointment in terms of seeing deployment :-( From http://ecn.ethz.ch/ecn-pam15.pdf:
"Even though ECN was standardized in 2001, and it is widely implemented in end-systems, it is barely deployed. This is due to a history of problems with severely broken middleboxes shortly after standardization, which led to connectivity failure and guidance to leave ECN disabled." SACK and PAWS seemed to have faired a little better I believe. Tom > rick jones >
