net_test environment changes

- update run_net_test.sh to config-enable privacy addresses
  and optimistic DAD (both apparently off by default)
- update mark_test's SendRA to support passing in the ND
  retranstimer parameter

Change-Id: I348609bcef16e0cb7b1f9cbfd33ef2ab4dcda917
2 files changed
tree: f59108cd8f1d0f02dce4c736d20e45b415115777
  1. net/