V1.9.55

• Fix bad learning behaviour on uninitialised ports during warm start
• Fix ports not always being initialised properly during warm start when certain conditions are met
• Advertise new IRC channel on libera.chat
• Improve pylint score
• Update docker base image used for faucet tests
  • Upgrade openvswitch to v2.15.1.
• Update dependencies:
  • Upgrade chewie to 0.22
  • Upgrade beka to 0.3.5
  • Upgrade grafana to 8.0.6 [apt, docker]
  • Upgrade sphinx to 4.1.1 [docs]
  • Upgrade prometheus to 2.28.1 [docker]
  • Upgrade pylint to 2.9.3 [tests]
  • Upgrade pytype to 2021.6.17 [tests]

V1.9.54

• Fix modifying meter options now safe when running multiple redundant faucet controllers
• Fix race condition between reading a config file, and calculating its hash
• Add spine and leaf generative unit tests
• Fix mailing list URLs in README
• Add Prometheus metric to track changes to stack state, lacp status and stack root
• Enable unit testing of faucet on python3.9
• Reimplement faucet release process to protect credential handling on GitHub Actions
• Use system pip for most of our install mechanisms to avoid causing incompatibilities by installing a version that is too new
• Update docker base image used for faucet tests
  • Change to Debian Buster from Ubuntu Bionic as Ubuntu has stopped supporting i386.
  • Upgrade openvswitch to v2.15.0.
  • Upgrade mininet to v2.3.0.
• Update dependencies:
  • Upgrade grafana to v7.5.7 [apt, docker]
  • Upgrade prometheus to v2.27.1 [docker]
  • Upgrade influxdb to 2.0 [docker]
  • Upgrade pytype to 2021.5.19 [tests]
  • Upgrade pylint to 2.8.2 [tests]
  • Upgrade scapy to 2.4.5 [tests]
  • Upgrade exabgp to 4.2.13 [tests]
  • Upgrade pika to 1.2.0 [rabbitmq adapter]
  • Upgrade sphinx to 4.0.2 [docs]
  • Upgrade sphinx_rtd_theme to 0.5.2 [docs]

V1.9.53

• Implement bidirectional tunnels across a stack for supporting centralized NFV services
• Fix tunnel ACL on a port not handled
• Fix rabbitmq adapter docker image build
• Fix controller redundancy for groupmod
• Fix dp_root_hop_port not set after cold start
• Fix packaging unit tests (broken by internal pip API change)
• Update dependencies:
  • Upgrade grafana to v7.3.4 [apt, docker]
  • Upgrade prometheus to v2.23.0 [docker]
  • Upgrade pytype to v2020.12.2 [tests]

V1.9.52

• Reduce forwarding impact of warm starts
  • Avoid sending deletes that overlap with adds
  • Fix cold starting a switch already in restart resulting in stale flows
• Refine choice of redundant stack root when stack is degraded
  • Ignore disconnected switches
  • When deciding between candidate stack roots with equal numbers of down ports, use LACP ports in nosync state as tie break
• Don't provision meters if they are not used by any ACL
• Do not run pytype CI job on python3.5 (pytype no longer supports python3.5)
• Update dependencies:
  • Upgrade prometheus_client to v0.9.0 [apt, pip]
  • Upgrade grafana to v7.3.3 [apt, docker]
  • Upgrade prometheus to v2.22.2 [docker]
  • Upgrade sphinx to v3.3.1 [docs]
  • Upgrade pytype to v2020.11.12 [tests]

V1.9.51

• Update Cisco documentation to include configuration for a larger TCP window so that OpenFlow connections are more stable when large numbers of flow modifications are sent.
• No longer use wildcard VLAN delete - makes adding/removing ports to a VLAN less computationally expensive.
• Clone dynamic stack state on stack root change to make change over smoother.
• Fix transient build error with rabbitmq adapter docker image.
• Fix build error with faucetagent docker image.
• Add 32bit support for running the test suite.
• Fix unnecessary apt package installation during test suite run.
• Update dependencies:
  • Upgrade prometheus to v2.22.0 [docker]
  • Upgrade grafana to v7.2.2 [apt, docker]
  • Upgrade pytype to v2020.10.8 [tests]
  • Upgrade faucet/test-base Docker tag to v8.0.4 [tests]

V1.9.50

• Fix crash handling flooded packet when initializing routing + stacking
• Fix initially hardcoded stack flood ports assumption
• Fix running of FaucetUntaggedNoCombinatorialFloodTest and FaucetMultiDPTest integration tests
• Flush L2 learning Prometheus variables on config reload
• Reduce impact of enabling mirroring on a VLAN, when mirroring a port
• Reduce CPU usage parsing config files
• Allow ACLs to output packets to the input port by manually outputting to OFP_IN_PORT
• Add integration tests for DHCP
• Allow DPs without any VLANs
• Add integration test coverage for multiple controllers
• Refactor Github Action CI workflows
• Update dependencies:
  • Upgrade prometheus to v2.21.0 [docker]
  • Upgrade grafana to v7.2.0 [apt, docker]
  • Upgrade sphinx to v3.2.1 [docs]
  • Upgrade pytype to v2020.9.29 [tests]
  • Upgrade scapy to v2.4.4 [tests]
  • Upgrade pylint to v2.6.0 [tests]

V1.9.49

• Significant refactoring of stacking implementation for easier maintenance
• Better diagnostics for CI test framework
• Ensure entire CI test framework is run when code is merged
• Use github actions to build python packages on release
• Add unit tests for redundant controllers sending flowmods offset in time.
• Set LLDP interval to max of fast advertise interval and send interval
• Fix implicitly created VLAN conflicting with explicitly created VLAN with same VID
• Fix tunnels having multiple sources across different DPs
• Fix tunnel destination cannot be a stack port
• Fix tunnel not applied on warm start if stack topology did not change
• Update dependencies:
  • Upgrade exabgp 4.2.11 [tests]
  • Upgrade pytype to 2020.8.10 [tests]
  • Upgrade sphinx to 3.2.0 [docs]
  • Upgrade grafana to 7.1.4 [apt, docker]
  • Upgrade prometheus to 2.20.1 [docker]

V1.9.48

• Don't send empty apply action instructions
• Add support for VLANs on a stack that aren't expressed on the root switch
• Fix LACP role metric was not updated when stack root changes
• Remove experimental API
• Export ryu_conf variables to as Prometheus metrics
• Gauge now clears all variables on config reload (so de-configured DP variables are removed)
• Update dependencies:
  • prometheus 2.20.0 [docker]
  • grafana 7.1.1 [apt, docker]
  • sphinx 3.1.2 [docs]
  • pytype 2020.7.30 [tests]

V1.9.47

• Optimization: suppress unneeded overlapping OpenFlow delete messages.
• Do not allow overlapping interface_ranges in configuration file.
• Add a prometheus variable for stack root status by datapath.
• Update dependencies:
  • prometheus 2.19.2 [docker]
  • grafana 7.0.4 [apt, docker]
  • sphinx 3.1.1 [docs]
  • sphinx_rtd_theme 0.5.0 [docs]
  • pytype 2020.6.26 [tests]

V1.9.46

• Optimise out actions that won't have any effect (e.g. modify packet header before dropping it)
• Fix coprocessor traffic being subject to VLAN ACLs
• Move LACP implementation to switch manager classes
• Remove unneeded mininet dependency in unit tests