What would be the impact in changing Source IP persistence for ios11 preparation?

To configure the source IP persistence as described in articleCTX227406will it affect pre-iOS11 versions?

This change should not affect iOS 10 devices

Question:1. When configured as described in the article, would iOS10 and older devices continue to function/connect?

Answer :Yes

Question: 2. Would enrolment be affected for devices running iOS10 or older? Not that they expect to enrol/re-enrol older versions but they may have devices they cannot upgrade.
Answer: No