// The tag strings define the protocol buffer field numbers;
// they follow the convention outlined by the reflect package.
struct {
	microsec  uint64 `protobuf:"1"`
	serverIP6 uint64 `protobuf:"2"`
}
</pre>

<p>
A struct type <code>T</code> may not contain a field of type <code>T</code>,
or of a type containing <code>T</code> as a component, directly or indirectly,