April 2026 monthly summary focusing on key accomplishments across oxidecomputer/dendrite and oxidecomputer/omicron. Delivered reliability improvements and foundational API architecture, with an emphasis on business value and maintainability.

March 2026: Delivered a focused set of API-driven network and data-management improvements for oxidecomputer/omicron, spanning firewall enhancements, IP pool and VPC integration, IP configuration refactoring, OxQL enhancements, and reliability fixes. These changes increase network filtering granularity, simplify and future-proof IP configuration, improve data integrity during VPC creation, expand query output capabilities, and stabilize multi-node timeseries operations across ClickHouse deployments.

February 2026 (2026-02) monthly summary for oxidecomputer/omicron. This month delivered end-to-end subnet lifecycle capabilities, improved datastore reliability, and enhanced IPv6 address management across the Nebula stack, along with substantial test coverage to ensure stability in production. Key deliverables: - Subnet Management Orchestration across Nexus and sled-agent: introduced APIs for attaching/detaching subnets, per-instance subnet mapping, and integration with the existing instance sagas and OPTE. A new background distribution task pushes attached subnets to Dendrite and sled-agents, ensuring eventual consistency across the control plane. - External subnet integration: added Nexus sagas for external subnet attach/detach, updated common saga code for subnet propagation, and plumbed the app layer to the new APIs. Included integration tests confirming behavior and fixed related issues. - Subnet pool visibility: introduced endpoints to list subnet pools linked to silos and added tests to verify visibility in operator workflows. - Dynamic IP stack management: extended the sled-agent to add or remove IP stacks in response to external IP requests, with tests covering merging behavior. - Explicit IPv6 addressing and disablement of auto SNAT: removed automatic creation of SNAT IPv6 addresses during instance creation; users can request IPv6 addresses explicitly (ephemeral or floating) when needed. Impact and value: - Significantly improved subnet lifecycle management, from provisioning to distribution, across Nexus, sled-agent, and OPTE. This reduces manual steps, increases reliability, and enables scalable external IP handling. - Expanded testing and observability with regression and integration tests, improving deployment confidence and fault detection. Technologies and skills demonstrated: - Distributed orchestration with sagas, background tasks, and cross-service API design. - Deep integration across Nexus, sled-agent, Dendrite, and OPTE with test-driven development. - Dynamic IP provisioning and IPv6 addressing strategies, with a clear path toward further IPv6 improvements.

January 2026 (oxidecomputer/omicron): Focused on delivering a scalable, IPv6-ready networking foundation and robust subnet management APIs that enable dual-stack deployments and streamlined subnet provisioning across silos. Key work included refactoring IP traits into common modules for broader API reuse, introducing a flexible IpConfig for NIC creation, and updating external APIs to support external subnets, subnet pools, and silo linkages. Completed public API wiring for subnet pools and external subnets with comprehensive database models, overlap checks, allocation logic, and integration tests. Updated networking dependencies to align with IPv6 integration (maghemite, dendrite, OPTE) and prepared API versioning and conversions from the previous API surface. Also established tests and integration points to validate end-to-end provisioning and safety checks, reinforcing reliability and developer productivity.

Month: 2025-12 — Focused on delivering scalable, version-aware networking capabilities for the oxidecomputer/omicron service, while aligning data models and API surfaces for easier maintenance and future updates. This period emphasized enhancements to dual-stack networking, improved IP address governance, and groundwork for per-version NIC updates via public API.

Month 2025-11 — oxidecomputer/omicron: delivered three major features with targeted reliability improvements, boosting IPv6 readiness, network provisioning automation, and internal NIC versatility while preserving backward compatibility. Key work included IPv6 enhancements for external IP allocation, a push-based networking probe zone management system, and dual-stack internal NIC configuration. These changes increase scalability, reduce allocation outages, and streamline operations. All changes include tests and migrations to safeguard stability and maintain business continuity. - External IP Address Allocation Enhancements: Adds IPv6 allocation alongside IPv4, with improved error handling for address exhaustion and reallocation, and new tests validating IPv6 allocation logic and integration with existing systems. Commits: 7c9c02317c740c16c2b2d17fd1ede74a5082c9e3; 92669b047967cfbc1473594c15f9d687bc140182. Closes: #9245, #1468, #1371. - Networking Probe Zone Management via Push to sled-agents: Implements a push-based mechanism for networking probe zones, introduces new APIs for probe management, a reworked probe manager, and a background update task to improve efficiency and reliability. Commit: c009adbad528a212beb85212b2c509768f594aa8. Closes: #9157. - Dual-Stack IP Configuration for Internal Network Interfaces: Introduces dual-stack IPv4/IPv6 configuration for internal network interfaces with updated database models and API conversions to maintain backward compatibility, and enhances the PortManager to handle dual-stack private IP addresses. Commit: f062472edf65eb3d66179a9d8dfb66619f458c96. Closes: #9246.

October 2025 performance summary for oxidecomputer/omicron. Focused on stabilizing shutdown workflows, expanding internal IP pool management, and enabling robust IPv6/dual-stack networking. Delivered targeted fixes and internal features across the repository, translating to reduced operational overhead, safer IP resource handling, and scalable, future-proof networking capabilities. Key outcomes include the following.

In September 2025, delivered a reliability improvement for transceiver monitoring in oxidecomputer/dendrite by re-checking transceivers previously marked as unsupported in subsequent monitoring passes. This change closes monitoring gaps, enabling timely detection and reporting of changes in transceiver support status. The update was implemented as a focused fix with a clear issue reference and commit, enhancing accuracy of hardware status reporting while keeping the monitoring loop lightweight and maintainable.

August 2025 – oxidecomputer/dendrite: Delivered Port ID Sorting Enhancement in swadm, introducing a refined sorting mechanism for switch port IDs. Port IDs are now ordered by type (internal, rear, QSFP) and then numerically, improving readability and predictability in complex network configurations. Commit: 8314881e372d7bbb4a4ee2da051ecdc34f66c534 ('Sort port IDs by type and then numerically (#106)'). Major bugs fixed: none reported this month. Overall impact: reduces operator errors, accelerates provisioning, and lays groundwork for future port-management enhancements. Technologies demonstrated: sorting logic, clear commit messaging, issue tracking, and UX-focused backend/tool improvements.

For July 2025, delivered substantial enhancements in oxidecomputer/omicron, focusing on external API reliability, observability, and agent robustness. Key outcomes include exposing ephemeral IP pool IDs in the external API, broadening USDT-based observability across critical components, fixing IP capture accuracy in ClickHouse probes, and refactoring the oximeter agent to improve responsiveness and robustness.

In June 2025, oxidecomputer/omicron delivered improved observability and reliability through a targeted UI error-reporting enhancement for transceiver data. The changes refactored the transceiver data handling to return explicit results rather than optional values, enabling explicit error reporting, and updated the Wicket UI to surface read-time issues for faster triage. This work reduces investigation time for data read failures and improves user trust in the UI.

Monthly work summary for 2025-05 focusing on key deliverables for oxidecomputer/dendrite. Highlights include two key items: (1) Tofino SDE dependency update to ensure builds use the latest components, including updated commit hash and SHA256 checksums for package and deb files, and (2) Swadm CLI enhancement adding Enable/Disable subcommands to control network link status, with updates to the Link enum and command handling to invoke link_enabled_set. Impact includes improved build reliability with current SDE components and enhanced operational control via automation. Technologies/skills demonstrated: Rust CLI tooling, dependency/version management, command handling and code refactoring, repository maintenance, and CI/build verifications. Business value: reduced build drift, faster deployment cycles, and improved network operation control.

April 2025 monthly summary for oxidecomputer/dendrite. Implemented Network BER Monitoring for RS FEC links to provide visibility into bit-error rates across network paths, with cross-layer support from ASIC up to the CLI. This enables per-lane and aggregate link-quality monitoring and lays the groundwork for proactive health checks and reliability improvements across RS FEC configurations.

March 2025: Delivered key enhancements to QSFP Port Management in oxidecomputer/dendrite, focusing on port-centric control, safer operator-mode handling, and API clarity. Consolidated port-management changes to QSFP ports, prevented the transceiver monitoring loop from overriding operator-set modes, and simplified the API by making transceiver_get return a Transceiver directly or a 404 when missing. These changes align port-management semantics with real-world deployment, reduce unexpected configuration changes, and improve error handling and automation readiness.

February 2025 monthly summary for oxidecomputer/omicron: Delivered core features for transceiver modernization, improved routing coherence, enhanced hardware visibility, and database access efficiency. The changes advance API compatibility with the latest transceiver API, stabilize routing state in the OPTE-based internet gateway, improve observability of transceiver hardware via the Wicket UI, and reduce database connection churn for oximeter data, increasing production reliability and performance.

January 2025 monthly summary for oxidecomputer/omicron focusing on delivering the OxQL Query Planner with plan visualization, optimization capabilities, and reliability improvements. This work enhances query performance, developer experience, and maintainability through feature delivery, error-handling refinements, and dependency updates.

December 2024 monthly summary for oxidecomputer/omicron: focused on delivering producer insights visibility, stabilizing the oximeter data collection pipeline, and enhancing system observability. Key outcomes include new API/CLI for oximeter producers, a modular refactor of the oximeter collector with improved test reliability, and upgrades to dependencies and observability tooling. These work items improve data visibility, reliability, and operational insight, reducing risk of regressions and accelerating data-driven decisions.

November 2024 monthly summary for oxidecomputer/omicron: Completed migration to the ClickHouse native protocol with block-based I/O, removing legacy JSON paths and aligning listing and error handling with the native client. Migrated all timeseries operations to the native client, including reading/writing timeseries, inserting samples, and selecting samples. Tightened oximeter reliability and initialization stability by fixing producer update logic, initiating a dedicated collection task, and hardening concurrency to reduce test flakes and missed ticks. Reduced attack surface and improved observability with HTTP port removal from the oximeter client and probe usage cleanup. These changes deliver faster data operations, improved reliability, and clearer diagnostics, enabling more confident monitoring and faster iteration.

Month: 2024-10 — Focused on delivering architectural improvements and instrumentation for oxidecomputer/omicron to boost reliability, performance, and operability in production. Key work centered on a protocol-based database client using the native ClickHouse protocol, alongside enhanced observability through library upgrades and diagnostics. No explicit major bug fixes were recorded this month; stability gains came from refactoring and instrumentation that reduce initialization overhead and improve issue diagnosis.