On 12/04/2017 06:54, Nick Hilliard wrote: > Brian E Carpenter wrote: >> BTW I don't see ECMP or load balancing listed in section 3. Those >> seem to be major applications of transport layer snooping. > > no, any load balancing which needs to scale needs to be stateless, so > you don't want session based mechanisms handling this. Server load balancing is often stateful, and even stateless SLB usually includes transport info in the hash. Or so I learned while working on RFC 7098. People who know also informed me that ECMP sometimes (not always) uses transport info (see RFC 6438). Brian