What will happen if listening 0.0.0.0 and loopback with a same port I'm confuse when I listen both 0.0.0.0 and localhost(or 127.0.0.1) with the same port. It has different behavior when using different IP connects to it. Here is my golang demo func main() { wg := sync.WaitGroup{} addrs := []string{"127.0.0.1:8080", "0.0.0.0:8080"} wg.Add(len(addrs)) for _, addr := range addrs { go lis(addr, &wg) } wg.Wait() _, err := net.Dial("tcp", "localhost:8080") if err != nil { return } time.Sleep(time.Millisecond...