Latest Fedora delivers 2.20 version. Upstream released 2.21. When you have free time, please upgrade it.
FEDORA-2019-317bd7d8ad has been submitted as an update to Fedora 31. https://bodhi.fedoraproject.org/updates/FEDORA-2019-317bd7d8ad
perl-Test-TCP-2.21-1.fc31 has been pushed to the Fedora 31 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2019-317bd7d8ad
perl-Test-TCP-2.21-1.fc29 has been pushed to the Fedora 29 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2019-57ba5c074b
FEDORA-EPEL-2019-65894aa457 has been submitted as an update to Fedora EPEL 8. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2019-65894aa457
perl-Test-TCP-2.21-1.el8 has been pushed to the Fedora EPEL 8 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2019-65894aa457
perl-Test-TCP-2.21-1.fc29 has been pushed to the Fedora 29 stable repository. If problems still persist, please make note of it in this bug report.
perl-Test-TCP-2.21-1.el8 has been pushed to the Fedora EPEL 8 stable repository. If problems still persist, please make note of it in this bug report.
perl-Test-TCP-2.21-1.fc31 has been pushed to the Fedora 31 stable repository. If problems still persist, please make note of it in this bug report.