code: func (e *endpoint) GetLocalAddress() (tcpip.FullAddress, *tcpip.Error) {
  	e.mu.RLock()
  	defer e.mu.RUnlock()
  
  	return tcpip.FullAddress{
  		NIC:  e.regNICID,
  		Addr: e.id.LocalAddress,
  		Port: e.id.LocalPort,
  	}, nil
  }
docs: // GetLocalAddress returns the address to which the endpoint is bound.