
Automatic merge from submit-queue (batch tested with PRs 37608, 37103, 37320, 37607, 37678) portfordwardtester: avoid data loss during send+close+exit Following https://blog.netherlabs.nl/articles/2009/01/18/the-ultimate-so_linger-page-or-why-is-my-tcp-not-reliable when closing the sending connection in the port-forward-tester container. Potentially fixing https://github.com/kubernetes/kubernetes/issues/27680