Fix flaky IpPrefixTest.

Test: IpPrefixTest passes
Bug: 32561414
Merged-In: Ib4bffe9d33a6d4f5c2bd97798073de0f66d77645

(cherry pick from commit b3ac7ab5838031ec55a5c91e75468a13cee89399)

Change-Id: Ibaf11aae9b13af868bebff820c9e7615b63c8eb2
1 file changed
tree: 32e5af515b289f80b707e48b563acd057a3c2fd9
  1. core/
  2. services/
  3. tests/