Disable all options by default

Summary: Extra lookup options should be disabled by default to ensure that things that need them explicitly enable them.

Differential Revision: D29255973

fbshipit-source-id: 5c92ad8685cb2f490aebd55a837a1463a624be97

folly/net/TcpInfo.h

@@ -34,10 +34,10 @@ namespace tcpinfo {
 struct LookupOptions {
   // On supported platforms, whether to fetch the name of the  congestion
   // control algorithm and any information exposed via TCP_CC_INFO.
-  bool getCcInfo{true};
+  bool getCcInfo{false};
 
   // On supported platforms, whether to fetch socket buffer utilization.
-  bool getMemInfo{true};
+  bool getMemInfo{false};
 };
 
 /**