Of note, in Ubuntu 24.04 unprivileged user namespaces are restricted via AppArmor. As a result some 3rd-party apps downloaded from the web no longer run in Ubuntu 24.04 LTS. This is by design and done in the name of security. Ubuntu encourages app devs to configure their apps to use confinement through AppArmor profiles, though this is not a trivial thing and can impact functionality. Workarounds are available for users to run such apps, including disabling the new feature entirely. Ubuntu 24.04 updates its underlying network stack to Netplan 1.0. This delivers support for simultaneous WPA2 & WPA3 connections, Mellanox VF-LAG, improves VXLAN, and delivers the stable libnetplan1 API.