Elect new IC/HostOS revision (commit 83f29e0)

Release Notes for release-2026-10-30\_12-16-base (83f29e0803496ba6aaea3d6b43f6c6bebea12dd9) ===================================================================================================================================================================

This release is based on changes since release-2026-10-22\_03-29-base (5e8370e0a84ffb783d6a9d77e0d3e90fa3914cfe).

Please note that some commits may be excluded from this release if they're not relevant, or not modifying the HostOS image. Additionally, descriptions of some changes might have been slightly modified to fit the release notes format.

To see a full list of commits added since last release, compare the revisions on GitHub.

Bugfixes:

• d26648f47 Node(ic-os): select SELinux with lsm= and update base image refs (#11983)

Chores:

• e80eca425 Core Protocol: Improve out of memory error text (#11950)
• e0eac7851 Core Protocol: rustc: 1.99.0 -> 1.99.1 (#11935)
• 32cfd0506 Core Protocol: remove redundant lifetime annotations (#11903)
• 7c7a7e8f6 Node: Replace infogetty cpp with a Rust version (#11881)
• 9a6741e41 Node: Remove update-config component (#11926)
• c13ffc3fb Node: Update Base Image Refs [2026-10-24-0132] (#11939)
• 3e645182a Node: remove the NTP fallback from chrony and require NTS sources (#11925)
• 58bf84781 Node: Update Base Image Refs [2026-10-22-0809] (#11915)

Refactoring:

• 39c32eaf0 Core Protocol(p2p): split InitialBroadcastSource out of ValidatedPoolReader (#11973)
• 94a5ab9fe Core Protocol(dkg): always pass remote transcripts in data payloads (#11920)
• 826b8785b Core Protocol: unify empty block creation and validation (#11917)
• 4920b2657 Node: name the SEV-SNP launch measurement length (#11135)

Full list of changes (including the ones that are not relevant to HostOS) can be found on GitHub.

IC-OS Verification

To build and verify the IC-OS HostOS disk image, after installing curl if necessary (sudo apt install curl), run:

# From https://github.com/dfinity/ic#verifying-releases
curl -fsSL https://raw.githubusercontent.com/dfinity/ic/83f29e0803496ba6aaea3d6b43f6c6bebea12dd9/ci/scripts/repro-check | python3 - -c 83f29e0803496ba6aaea3d6b43f6c6bebea12dd9 --hostos

The two SHA256 sums printed above from a) the downloaded CDN image and b) the locally built image, must be identical, and must match the SHA256 from the payload of the NNS proposal.

While not required for this NNS proposal, as we are only electing a new HostOS version here, you have the option to verify the build reproducibility of the GuestOS by passing --guestos to the script above instead of --hostos, or the SetupOS by passing --setupos.