ncsid: Find IPv6 gateway stably

Some environments have multiple gateways for the node to use. We want to
ensure that we aren't flip flopping between multiple gateways and lock
on to a specific gateway until it goes away.

Tested: Ran in an environment with multiple gateways and verified that
it did not switch after it acquired the first one.

Change-Id: I12bac9582d35bdca49320fab8f5063ebfb2f3986
Signed-off-by: William A. Kennington III <wak@google.com>
1 file changed