Imagine you have only one more bit left in the world! Scratch that. Imagine there is only a half bit left in the world. Then imagine there are multiple causes vying for this half bit. Who would you give it to and why?

Yes, these things happen;-> A lot easier when it is between developers and a lot harder when it is to decide a standard that shall be cast in stone. The Internet Engineering Task Force (ietf) Transport Area Working Group (tsvwg) has such a struggle going. There are presently 2 proposals before for the last unused code point in the IPv4/6 header - one by the Low Latency Low Loss Scalable throughput (L4S) folks (see Netdev 0x13 for L4S talks) and another from the Some Congestion Experienced (SCE) folks.

In this talk, Rodney Grimes will describe the two solutions and their prototype kernel implementations; what changes are made to both TCP and IP layers, etc.

Rod is then going to pose the $1M question and solicit feedback: is one approach better than the other or do we need a new outlook?

More info: https://netdevconf.info/0x14/session.html?talk-what-to-do-with-half-a-bit-L4...

Reminder, registration is now open and early bird is still in effect. https://netdevconf.info/0x14/registration.html

cheers, jamal