am b90871f4: (-s ours) am 5d26339a: DO NOT MERGE: backport the IPv6 NetworkInterface/multicast fixes.

Merge commit 'b90871f4c638ce83137adea74b66dd3eca907cfe'

* commit 'b90871f4c638ce83137adea74b66dd3eca907cfe':
  DO NOT MERGE: backport the IPv6 NetworkInterface/multicast fixes.