const runtime.traceEvGoBlockNet

2 uses

	runtime (current package)
		netpoll.go#L438: 		gopark(netpollblockcommit, unsafe.Pointer(gpp), waitReasonIOWait, traceEvGoBlockNet, 5)
		trace.go#L50: 	traceEvGoBlockNet        = 27 // goroutine blocks on network [timestamp, stack]