ncsid: Support parsing unsolicited RA announcements

We depend on this for router's whose MACs change over the lifetime of
the BMC and need updates even when we can't send neighbor solicitations
and receive advertisements.

Change-Id: Id7eb8ee8d44aea597a63276acc698f8fee9059b2
Signed-off-by: William A. Kennington III <wak@google.com>
8 files changed