Fix logic error in handling resolveGateway()
Fix logic error in handling resolveGateway()

* Use gateway address to trigger resolution rather than network address
* Only reschedule handling a route if resolveGateway() returns 0
* Force initiateND() to fail on IPv6 (noisily) since that just fails for now

Change-Id: I604c9359125f2470294aeaaac59fe0ae4121071a

Signed-off-by: Mark Lentczner <941b0db5758256c28539da44b1b6b2481c0859ee@google.com>
Signed-off-by: Joe Stringer <16a9a54ddf4259952e3c118c763138e83693d7fd@wand.net.nz>

rsanger/RouteFlow,rsanger/RouteFlow,rsanger/RouteFlow,rsanger/RouteFlow,rsanger/RouteFlow,rsanger/RouteFlow