Add support for Nullable IpConfiguration

Test: atest EthernetServiceTests
Change-Id: I6b415ffb2f5825a9dffda1366b60c1e0d26f4e64
4 files changed
tree: 0aeb15ec0c54163cbe091fa00ec6be365d8e2d54
  1. service-t/
  2. tests/