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v2.2.1

## v2.2.1 -- April 2026

* Build and CI fixes for RHEL 9 based environments
  - Switch container registry usage to `registry.redhat.io`
  - Replace RHEL `yq` image pull with direct GitHub download flow
  - Pass the EPEL URL as a parameter in Jenkins RHEL jobs
* Licensing and documentation
  - Re-license the project from OAI Public License v1.1 to CSSL v1.0
  - Re-license documentation under CC-BY-4.0 and orchestration/CI assets under MIT
  - Add `NOTICE`, `LICENSES/`, and related contribution/documentation updates

v2.2.0

* Features
  - Framed routing for simple switch UPF
  - Ethernet PDU session
  - Configure eBPF map sizes via config file
  - Manipulate BPF debug logging
  - Support QoS enforcement
* Fixes
  - Fix the pFAR add to map
  - Apply SEID fix on framed routing change
  - Fix XDP_DROP does not exit in TC
  - Update code to manage the TC BPF program separately
* Future Fixes
  - Add support for framed routing for eBPF UPF
  - Improve the throughput of the simple switch UPF
  - Add support for Ubuntu 24.04
  - Add support for RHEL 10, update container images to UBI 10

v2.1.9

Pre-v2.2 release tag for testing

v2.1.0

* Features
  - Add connection handling between UPF and NRF
  - Use HTTP Request Timeout parameter from Conf file
  - QoS initial support
  - N4 interoperability improved
  - Performance improvement: CPU usage is further reduced
* Fixes
  - Fixes: thread management especially at shutdown.
  - Fix FDQN IPv4-only resolution
  - Fix Using SD in string hex in UPF profile to send to NRF
  - Fix to update TEID after a reconnection with FiveG_S_TMSI
* Tech Debt
  - Stopping support for RHEL8/Rocky8 in favor of RHEL9/Rocky9
  - Remove NRF dependency from UPF
  - HTTP client cpr library refactoring effort
  - Bumping up libbpf and bpftool versions:
    - libbpf to `master` (currently above `v1.4.5`)
    - bpftool to `v7.3.0`
    - This should allow to build on newer systems

v2.0.0

* Features
  - Support YAML configuration file
    * Yaml validation default value
  - Implemented an eBPF-based solution in parallel of the current Simple-Switch solution
    * This is a runtime option
  - De-register towards NRF on exit
  - Enable PFCP association request for no NRF case
* Tech debt
  - Switching to clang-format-12
  - Published image on Docker-Hub is using now Ubuntu-22 as base image
  - Ubuntu-18 is no longer supportable due to eBPF

v2.0.1