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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

0.3.0 - 2026-02-24

Added

  • RFC 7419 common interval support for BFD session timer negotiation.
  • RFC 9468 unsolicited BFD mode for sessionless applications with passive listener.
  • RFC 9747 unaffiliated BFD echo function with echo receiver and reflector.
  • RFC 7130 Micro-BFD for LAG interfaces with per-member-link sessions and aggregate state.
  • RFC 8971 BFD for VXLAN tunnels with overlay-aware packet handling.
  • RFC 9521 BFD for Geneve tunnels with option-C encapsulation.
  • RFC 9384 BGP Cease NOTIFICATION subcode 10 (BFD Down) via GoBGP integration.
  • Vendor interop lab bootstrap script (test/interop-clab/bootstrap.py): automated image preparation for Nokia SR Linux, SONiC-VS, FRRouting, VyOS, Arista cEOS, Cisco XRd.
  • RFC-specific interop test suite (test/interop-rfc/): dedicated tests for unsolicited BFD, echo function, and BGP Cease notification.
  • Cisco XRd vendor interop support with XR configuration and PID limit handling.
  • SONiC-VS interop improvements with robust BGP/BFD configuration script.

Changed

  • Vendor interop run.sh gracefully skips vendors that fail initialization instead of aborting.

0.2.0 - 2026-02-23

Added

  • IPv6 dual-stack BFD testing in vendor interop suite (RFC 5881 Section 5): Arista cEOS, Nokia SR Linux, FRRouting tested with ULA fd00::/8 addresses and /127 prefixes per RFC 6164.
  • SonarCloud integration for continuous code quality analysis.
  • Codecov integration for test coverage tracking.
  • CodeQL and gosec SARIF workflows for deep security analysis.
  • Dependabot configuration for automated dependency updates (Go, Docker, GitHub Actions).
  • Changelog documentation guide (docs/en/10-changelog.md, docs/ru/10-changelog.md).
  • osv-scanner vulnerability scanning in CI and Makefile (make osv-scan).
  • gofumpt and golines (max-len: 120) formatters in golangci-lint.
  • BGP+BFD full-cycle interop tests: GoBFD+GoBGP ↔ FRR, BIRD3, ExaBGP (3 scenarios with route verification).
  • Containerlab vendor BFD interop tests: Nokia SR Linux, FRRouting, Arista cEOS (available); Cisco XRd, SONiC-VS, VyOS (defined, skip if image absent).
  • Arista cEOS 4.35.2F support: start_arista_ceos() with 8 mandatory env vars, wait_arista_ceos() boot health check, protocol-triggered BFD via BGP.
  • Nokia SR Linux BFD timer fix: bounce subinterface after config commit to negotiate at 300ms.
  • netlab integration documented as future direction for VM-based vendor testing.
  • Integration example: GoBFD + GoBGP + FRR (BGP fast failover with route withdrawal demo).
  • Integration example: GoBFD + HAProxy (agent-check backend health with sub-second failover).
  • Integration example: GoBFD + Prometheus + Grafana (observability with 4 alert rules).
  • Integration example: GoBFD + ExaBGP (anycast service announcement via BFD-controlled process API).
  • Integration example: GoBFD DaemonSet in Kubernetes (k3s with GoBGP sidecar and host networking).
  • New binary: gobfd-haproxy-agent — HAProxy agent-check bridge for BFD health monitoring.
  • New binary: gobfd-exabgp-bridge — ExaBGP process API bridge for BFD-controlled route announcements.
  • tshark packet verification sidecar in all integration stacks.
  • Integration documentation (docs/en/11-integrations.md, docs/ru/11-integrations.md).
  • Makefile targets for all integration examples (int-bgp-failover, int-haproxy, int-observability, int-exabgp-anycast, int-k8s).
  • Version display (--version) for all binaries with commit hash and build date.
  • Shared version package (internal/version) with ldflags injection.
  • Version injection in Makefile, CI, GoReleaser, and all Containerfiles.

Changed

  • make build now injects version, commit hash, and build date via ldflags for all 4 binaries.
  • Replaced c-bata/go-prompt with reeflective/console for interactive shell.
  • Expanded golangci-lint from 39 to 68 linters with strict security-focused configuration.
  • Split CI workflow into parallel jobs (build-and-test, lint, vulnerability-check, sonarcloud, buf).
  • Enhanced release workflow to extract release notes from CHANGELOG.md.
  • Renamed Prometheus gauge metric gobfd_bfd_sessions_total to gobfd_bfd_sessions (convention fix).

0.1.0 - 2026-02-21

Added

  • BFD Control packet codec with round-trip fuzz testing.
  • Table-driven FSM matching RFC 5880 Section 6.8.6.
  • Five authentication modes: Simple Password, Keyed MD5/SHA1, Meticulous MD5/SHA1.
  • Raw socket abstraction for Linux (UDP 3784/4784, TTL=255 GTSM).
  • Session manager with discriminator allocation and detection timeout.
  • ConnectRPC/gRPC API server with recovery and logging interceptors.
  • gobfdctl CLI with Cobra commands and interactive shell.
  • GoBGP integration with BFD flap dampening (RFC 5882 Section 3.2).
  • Prometheus metrics collector and Grafana dashboard.
  • systemd integration (Type=notify, watchdog, SIGHUP hot reload).
  • YAML configuration with environment variable overlay (koanf/v2).
  • 4-peer interoperability test framework (FRR, BIRD3, aiobfd, Thoro/bfd).
  • Debian and RPM packages via GoReleaser nfpms.
  • Docker image published to ghcr.io/dantte-lp/gobfd.
  • CI pipeline: build, test, lint, govulncheck, buf lint/breaking.
  • Bilingual documentation (English and Russian).