The IESG has received a request from the Interface to Network Security Functions WG (i2nsf) to consider the following document: - 'I2NSF Problem Statement and Use cases' <draft-ietf-i2nsf-problem-and-use-cases-11.txt> as Proposed Standard The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the ietf@ietf.org mailing lists by 2017-03-22. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract This document describes the problem statement for Interface to Network Security Functions (I2NSF) as well as some companion use cases. The file can be obtained via https://datatracker.ietf.org/doc/draft-ietf-i2nsf-problem-and-use-cases/ IESG discussion can be tracked via https://datatracker.ietf.org/doc/draft-ietf-i2nsf-problem-and-use-cases/ballot/ No IPR declarations have been submitted directly on this I-D.