Topics in network testing [Series editorial]

Among the received eight submissions from the last call, we have accepted four of them, with one from academia, one from a national laboratory, one from industry, and one from a combined team of academia and industry. At the time of writing this editorial for these four articles, we have also finished the first-round review process of the next batch of nine submissions, and shall move to the second-round review process. Most accepted papers received the decision of major revision in the first-round review and needed to go through the second-round review. The number of submissions remains stable, and we should be able to pick at least one from product vendors, test laboratories, and test equipment vendors, which gives enough industrial flavor to this Series. The due dates remain June 1 and December 1 each year.