If you're not using Ubuntu Studio, you have NetworkManager, else you can install it, or wait for the tab to come back (hopefully). The decision was made by developers that didn't know Studio wasn't installing NetworkManager, and nobody complained until the release was very close. Anyway, see the duplicate.
If you're not using Ubuntu Studio, you have NetworkManager, else you can install it, or wait for the tab to come back (hopefully). The decision was made by developers that didn't know Studio wasn't installing NetworkManager, and nobody complained until the release was very close. Anyway, see the duplicate.