DO NOT MERGE APF: also drop any ICMPv6 RSs

Test: new unit test + $ runtest franeworks-net
Bug: 32833400

(cherry picked from commit f98182ef5e80ede5de7f2c2a5f40fc92a46c9704)

Change-Id: I4c46304b9dc8105123fc02a29f99dbc835248eb0
2 files changed