Fix DadProxyTest when forwarding is on. am: b6bffbca95 am: 3f29d3ef39

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1664401

Change-Id: I3904270affd954bf265ac3df31041d794a559cc0
tree: f64dc619f3e4bf83031c6c8b8fe259c6be33d84b
  1. tests/
  2. Tethering/
  3. .gitignore
  4. OWNERS
  5. PREUPLOAD.cfg
  6. TEST_MAPPING