Address review comments
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index f261481..670df36 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -102,7 +102,7 @@
   }
 
   s.default_subspecs = 'Interface', 'Implementation'
-  s.compiler_flags = '-DGRPC_NATIVE_ADDRESS_RESOLVE'
+  s.compiler_flags = '-DGRPC_ARES=0'
 
   # Like many other C libraries, gRPC-Core has its public headers under `include/<libname>/` and its
   # sources and private headers in other directories outside `include/`. Cocoapods' linter doesn't