Setup IP forwarding in base system for ns_IPaddr2 resources

Closes-bug: #1342073
Closes-bug: #1340968

Change-Id: I9aeafdd458aab0545ec08a01f43e39f0499b020d
(cherry picked from commit 0c60c1935b9d29d46bbb0080f7f30bc387294cb7)
Merge "Setup IP forwarding in base system for ns_IPaddr2 resources" into stable/5.0