GCP News - 2026-07-30

2026-07-30
最終更新: 2026-08-27 21:31:25 JST

Google Cloud Release Notes

July 30, 2026

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Agent Platform Workbench

Change

M145 Release

Change

20260730-2130-rc0 Release

Change

Installed latest packages from upstream dependencies.

Change

Installed latest packages from upstream dependencies.

Fixed

Fixed issue with JupyterLab UI silently reverting file changes and interrupting kernels due to Gemini CLI's auto reload extension.

Change

The JupyterLab last-active and auto-reload extensions are now enabled only when Gemini CLI is configured, preventing them from affecting the native JupyterLab UI otherwise.

Fixed

Fixed the JupyterLab Git extension's Pull and Push buttons being disabled by pinning jupyterlab-git to 0.53.0.

Fixed

Fixed the JupyterLab Git extension's Pull and Push buttons being disabled by pinning jupyterlab-git to 0.53.0.

Fixed

Fixed an error that could prevent creating new micromamba environments at runtime due to package cache permissions.

Fixed

Fixed an error that could prevent creating new micromamba environments at runtime due to package cache permissions.

Fixed

Workbench internal agents now trust custom and enterprise CA certificates installed on the host operating system, fixing TLS certificate verification failures for connections routed through the instance proxy.

Fixed

Workbench internal agents now trust custom and enterprise CA certificates installed on the host operating system, fixing TLS certificate verification failures for connections routed through the instance proxy.

Fixed

Files created by the post-startup script are now owned by the jupyter user, and git safe.directory is configured so that root-owned repositories continue to work.

Fixed

Files created by the post-startup script are now owned by the jupyter user, and git safe.directory is configured so that root-owned repositories continue to work.

Fixed

Fixed issue with JupyterLab UI silently reverting file changes and interrupting kernels due to Gemini CLI's auto reload extension.

Change

The JupyterLab last-active and auto-reload extensions are now enabled only when Gemini CLI is configured, preventing them from affecting the native JupyterLab UI otherwise.

Change

The JupyterLab last-active and auto-reload extensions are now enabled only when Gemini CLI is configured, preventing them from affecting the native JupyterLab UI otherwise.

Backup and DR

Feature

You can now configure selective disk backup for Compute Engine instances in a backup plan to exclude specific attached non-boot disks from virtual machine (VM) backups. You can configure selective disk backup by backing up only the boot disk (boot-disk-only) or by excluding disks that match specified label key-value pairs (disk-exclusion-labels). When you restore a VM from a selective disk backup, only the protected disks are restored.

Additionally, you can now perform a selective disk restore from a Compute Engine instance backup by selecting the Individual disk restore scope. This allows you to selectively restore an individual protected disk from an instance backup to create a new Persistent Disk volume without restoring the entire VM instance.

For more information, see Selective disk backup for Compute Engine instances, Restore limitations for selective disk backups, and Perform a selective disk restore from a Compute Engine instance backup.

BigQuery

Feature

You can add tables, views, data sources, and data quality tests as tasks to BigQuery pipelines. For more information, see Add a pipeline task. This feature is generally available.

Feature

You can audit when users download query results by using the BigQuery console. Data Access audit logs for the tabledata.list method now include a uiDownloadRequest field to indicate whether the request was triggered by a UI download. This feature is generally available (GA).

Bigtable

Feature

You can use Bigtable as a remote storage backend for LMCache. By storing the large language model (LLM) key-value (KV) cache externally in Bigtable, multiple AI serving instances can share and reuse precomputed attention tensors. This reduces compute overhead and significantly improves time-to-first-token (TTFT) for repeated prompts and shared documents. This feature is in Preview.

Cloud API Registry

Deprecated

Support for retrieving, listing, enabling, and disabling Model Context Protocol (MCP) servers and tools using the Cloud API Registry API is shut down. For supported services, MCP endpoints are available once you enable the API. For more information, see Feature deprecations.

Config Connector

Announcement

Config Connector version 1.154.1 is now available.

Feature

New Alpha Resources (Direct Reconciler):

Feature

New Fields:

Change

Reconciliation Improvements:

We have added support for direct reconciliation to more resources, with opt-in behaviour. The API is unchanged. To use the direct reconciler, add the cnrm.cloud.google.com/reconciler: direct annotation to the corresponding Config Connector object.

Fixed

Bug Fixes:

Container Optimized OS

Change

cos-121-18867-528-36

Kernel Docker Containerd GPU Drivers
COS-6.6.143 v27.5.1 v2.0.10 See List

Change

Added opt-in support for the guest agent extensions manager, MWLID, and Telemetry extensions.

Security

Fixed CVE-2026-29111 in sys-apps/systemd

Security

Fixed CVE-2026-35177 in app-editors/vim and app-editors/vim-core.

Security

Fixed CVE-2026-3644 in dev-lang/python

Security

Fixed CVE-2026-40355 and CVE-2026-40356 in app-crypt/mit-krb5.

Security

Fixed CVE-2026-53381 in the Linux kernel.

Security

Fixed CVE-2026-53385 in the Linux kernel.

Security

Fixed CVE-2026-53388 in the Linux kernel.

Security

Fixed CVE-2026-53391 in the Linux kernel.

Security

Fixed CVE-2026-53397 in the Linux kernel.

Security

Fixed CVE-2026-53398 in the Linux kernel.

Security

Fixed CVE-2026-59995, CVE-2026-59996, CVE-2026-59997, CVE-2026-59999, CVE-2026-60000, CVE-2026-60001, and CVE-2026-60002 in openssh.

Security

Fixed CVE-2026-6019 in dev-lang/python

Security

Fixed CVE-2026-63794 in the Linux kernel.

Security

Fixed CVE-2026-63795 in the Linux kernel.

Security

Fixed CVE-2026-63800 in the Linux kernel.

Security

Fixed CVE-2026-63802 in the Linux kernel.

Security

Fixed CVE-2026-63807 in the Linux kernel.

Security

Fixed CVE-2026-63809 in the Linux kernel.

Security

Fixed CVE-2026-63823 in the Linux kernel.

Security

Fixed CVE-2026-63824 in the Linux kernel.

Security

Fixed CVE-2026-63827 in the Linux kernel.

Security

Fixed CVE-2026-63828 in the Linux kernel.

Security

Fixed CVE-2026-63830 in the Linux kernel.

Security

Fixed CVE-2026-64244 in the Linux kernel.

Security

Fixed CVE-2026-64247 in the Linux kernel.

Security

Upgraded net-libs/nghttp2 to 1.69.0 and fixed CVE-2026-58055.

Cortex Framework

Announcement

Release 7.0.0-GA (General Availability)

Feature

Google Cloud Cortex Framework version 7 is now generally available. Version 7 introduces a modular deployment architecture, simplified data orchestration via Dataform, and AI-ready data products with BigQuery and Knowledge Catalog integration. This enables enterprises to build, extend, and deploy data assets and pipelines for advanced analytics and agentic use cases with less risk, complexity, and cost.

New features and enhancements

additional to those released in preview

AI, discovery, and governance:

Expanded data product content and integrations:

Supportability and operations:

Change

Google Cloud Cortex Framework version 7 includes telemetry to capture anonymized deployment statistics. This data helps the solution build team focus on improving modules with high adoption. Telemetry is enabled by default, but you can opt out at any time.

Data Studio

Announcement

The following features are rolling out over the next week.

Feature

Conversational Analytics is generally available

Conversational Analytics in Data Studio is now generally available. You can now filter your data agents by the Google Cloud project to which they belong. Agents that require additional permissions are now displayed with an Unavailable label.

Feature

Email notifications when sharing Conversational Analytics data agents

When you share data agents that were created in BigQuery with Data Studio users, you can opt to send an email to notify those users of their access to the agent.

Google Cloud Contact Center as a Service

Announcement

Google Cloud CCaaS 5.2

We've released version 5.2 of Google Cloud CCaaS.

The timing of the update to your instance depends on the deployment schedule that you have chosen. For more information, see Deployment schedules.

Feature

Answering machine detection for progressive campaigns

Answering machine detection (AMD) is now supported for progressive outbound campaigns. When enabled, Contact Center AI Platform analyzes call audio in the background to determine whether a call reaches a live person, or whether it reaches an answering machine or voicemail. If an answering machine or voicemail is detected, the call ends and the dialer proceeds to the next contact.

Administrators: In the Settings > Campaigns > Dialer Modes pane, there's a new Enable Answering Machine Detection toggle.

User experience change: When CCAI Platform detects voicemail or an answering machine, a green banner appears in the call adapter to indicate this.

For more information, see Answering machine detection for progressive campaigns.

Feature

New endpoints for getting email sessions and messages

Two new read-only endpoints are now available, allowing external systems to retrieve the parsed contents of an email interaction. This includes the sender, recipients, subject, body, and attachment metadata. Here are the endpoints:

  • /apps/api/v1/email/sessions/EMAIL_SUPPORT_ID: Returns email session summary information and a list of message IDs with metadata.

  • /apps/api/v1/email/messages/EMAIL_THREAD_ID: Returns the full content of a single message.

For more information, see Get email sessions and messages.

Feature

Email forwarding with attachments

Agents can now forward emails to external recipients directly from the email adapter. When forwarding, all attachments from the original email are automatically included. Agents can remove attachments before sending, if needed. The original email remains in its assigned queue with its status unchanged.

User experience change: A new Forward button is available in the email adapter.

For more information, see Forward an email.

Feature

Smart disposition

Smart disposition is a new AI-powered capability that automatically suggests a disposition code at the end of a session. This reduces manual work for agents and improves data consistency.

Administrators: There's a new Smart Disposition toggle in the following locations:

  • The Settings > Operation Management > Wrap-up > Automatic wrap-up for inbound calls > Disposition Codes & Notes for calls > Disposition Codes section.

  • The Settings > Operation Management > Wrap-up > Automatic wrap-up for outbound calls > Disposition Codes & Notes for calls > Disposition Codes section.

  • The Settings > Operation Management > Wrap-up > Automatic wrap-up for chats > Disposition Codes & Notes for chats > Disposition Codes section.

User experience change: When smart disposition is turned on, a suggested disposition displays in the Disposition field of the Wrap-up screen in the agent adapter.

For more information, see Smart disposition.

Fixed

This release addresses the following issues:

  • Fixed an issue where voice calls became stuck in a virtual agent state after a session ended abnormally or an escalation handoff didn't complete.

  • Fixed an issue where using invalid sorting parameters on agent activity logs caused a server error.

  • Fixed an issue where canceling a warm transfer to a queue at overcapacity caused the caller to become stranded in an automated menu loop.

  • Fixed an issue where the agent activity logs API allowed unbounded time ranges, which led to system performance degradation and gateway timeouts.

  • Fixed an issue where the team and menu endpoints experienced performance delays.

  • Fixed an issue where calls transferred to a queue with overcapacity deflection (OCD) enabled didn't redirect, causing callers to hear indefinite ringing.

  • Fixed an issue where the call duration in the call adapter and in the in-call status timer of the agent desktop didn't match for outbound calls.

  • Fixed an issue where the Agent Activity dashboard displayed time zones inconsistently.

  • Fixed an issue where the inactivity timer didn't force a session to end if the agent closed the browser or browser tab before the inactivity timer expired.

  • Fixed an issue where the All Call History and Individual Call History reports displayed incorrect cascade group numbers for transferred calls and chats.

  • Fixed an issue where the sentiment score appeared in the Call Details panel of the agent desktop despite sentiment analysis being turned off in the conversation profile.

  • Fixed an issue with IVR calls routed through Nexmo, where the virtual agent missed the first several seconds of caller audio, forcing callers to repeat themselves.

  • Fixed an issue where chats became stuck in the queue after a deltacast routing projection expired or an agent didn't connect.

  • Fixed an issue where reordering queues in the CCAI Platform portal caused significant latency and required a manual page refresh to display the changes.

  • Fixed an issue with Salesforce integrations where adding a third party to a call incorrectly displayed their contact name in the customer field in the agent desktop Participants panel.

  • Fixed an issue where direct inbound SMS chats that were sent to an unavailable agent expired and failed instead of being rerouted.

  • Fixed an issue where anonymous inbound calls incorrectly displayed an agent's contact information instead of indicating an unknown caller.

  • Fixed an issue where database deadlocks caused transactions to run against the wrong database, causing failed lookups and chat sessions getting stuck.

  • Fixed an issue where manual status changes to Available after an automatic wrap-up were incorrectly attributed to the system instead of the agent in activity reports.

  • Fixed an issue where retrieving large datasets using the manager API caused connection timeouts and incomplete data synchronization for downstream systems.

  • Fixed an issue where the Agent Assist Hub incorrectly displayed The Agent Assist Hub feature is not enabled during voice sessions despite the Agent Assist Hub being enabled.

  • Fixed a web SDK issue where navigating between pages on the host website during an active chat resulted in a duplicate session being created.

  • Fixed an issue where the AgentSystemData historical report incorrectly showed zero login time for agents who were actively handling calls.

  • Fixed an issue where Dialogflow agents incorrectly escalated or disconnected calls when responding with only pre-recorded audio.

  • Fixed an issue where transfer completion events appeared twice in the agent desktop session data feed when a user was transferred to a task virtual agent.

  • Fixed an issue where virtual agent interactions failed and escalated prematurely.

  • Fixed an issue where a single wrap-up event was incorrectly dispatched twice to Dialogflow on bidirectional-enabled voice calls.

  • Fixed an issue where session summarization sections weren't displayed in the order that they were configured.

  • Fixed an issue where sensitive information in the CC and BCC fields of email requests was visible in system logs.

  • Fixed an issue where the email adapter displayed a blank gray screen when an agent attempted to transfer emails between queues.

  • Fixed an issue in Kustomer integrations where abandoned or failed calls weren't finalized, leaving records in the Call In Progress state.

  • Fixed an issue in ServiceNow integrations where starting a chat from a queue caused duplicate cases for a single chat ID.

  • Fixed an issue where mobile chat sessions ended unexpectedly after successfully escalating to a human agent.

  • Fixed an issue where chat transcript PDF headers remained in English for non-English queues.

  • Fixed an issue where placeholder text (Content cards displayed here) didn't appear in the agent adapter or live chat view when content cards weren't supported.

  • Fixed an issue where agents received duplicate SMS messages from end-users.

  • Fixed an issue where the inactivity timeout didn't trigger for chats waiting in a transfer queue.

  • Fixed an issue where chats waiting in a transfer queue remained open indefinitely and created duplicate metadata files.

  • Fixed an issue where chat transcripts were missing from data exports when a CRM ticket wasn't created.

  • Fixed an issue where chats escalated from a virtual agent remained in queued status after being assigned to an agent.

  • Fixed an issue where calls escalated from a virtual agent to a holiday-closed queue bypassed the holiday message and played the after-hours deflection message.

  • Fixed an issue where call recording URLs weren't saved or synced to the CRM for calls with multiple audio segments, such as those involving an IVR followed by an agent conference.

  • Fixed an issue where voice calls remained in an assigned state without progressing or requeueing if a system error occurred during the assignment process.

  • Fixed an issue where callers were disconnected from voicemail greetings after an agent completed their wrap-up following a call transfer.

  • Fixed an issue where manual wrap-up session data was incorrectly recorded across multiple sessions, leading to inflated duration reports.

  • Fixed an issue where duplicate call recording files with an .N suffix were created in external storage.

  • Fixed an issue where calls prematurely disconnected or experienced audio loss during the hangup process.

  • Fixed an issue where Telnyx VoIP calls silently dropped without notification if the connection was interrupted.

  • Improved internal instrumentation to diagnose poor call quality scores and improve call reliability.

  • Fixed an issue where agents configured for Deltacast and auto-answer received unexpected multicast call offers.

  • Fixed an issue where the agent desktop didn't save call-related settings such as mute status.

  • Fixed an issue where queue-level automatic wrap-up settings were unexpectedly disabled.

  • Fixed an issue where the switch to chat button wasn't accessible from the keyboard.

  • Fixed an issue where an agent ended the wrap-up session of another agent.

  • Fixed an issue where agents experienced delays of up to 30 seconds when transitioning from "Wrap" to "Available" status.

  • Fixed an issue where an An error has occurred message incorrectly appeared when a user created a direct access point for instances without a configured CRM.

  • Fixed an issue where message timestamps weren't visible to supervisors and administrators when monitoring active chats in the CCAI Platform portal.

  • Fixed an issue where historical data syncs to Calabrio failed.

  • Fixed an issue where the bulk user upload process allowed unauthorized role assignments.

  • Fixed an issue where deleting a notification rule removed all associated historical notifications without warning.

  • Fixed an issue where call events in timeline reports appeared out of chronological order.

  • Fixed an issue where technical connection timeouts during call offers weren't correctly tracked as skipped interactions.

  • Fixed an issue where chats remained in the queue following a virtual agent escalation.

  • Fixed an issue where importing a contact list CSV for a native power dial campaign failed if the file contained malformed rows or encoding issues.

Google Cloud Marketplace Partners

Change

We've added the city field to Customer Insights reports and Detailed Disbursements reports.

For more information, see Customer Insights report fields and Detailed Disbursements report fields.

Google Kubernetes Engine

Change

(2026-R32) Version updates

GKE cluster versions have been updated.

New versions available for upgrades and new clusters.

The following versions are now available for new GKE clusters, and for manual control plane upgrades and node upgrades for existing clusters. For more information about versioning and upgrades, see GKE versioning and support and About GKE cluster upgrades.

Rapid channel

Regular channel

Stable channel

  • Version 1.34.9-gke.1065000 is now the default version for cluster creation in the Stable channel.
  • The following versions are now available in the Stable channel:
  • The following versions are no longer available in the Stable channel:
    • 1.33.12-gke.1165000 is deprecated in the Stable channel. This version will be removed in 90 days, or at the end of support, if sooner.
    • 1.34.8-gke.1278000
  • Clusters in this channel running the listed minor version have new general auto-upgrade targets. GKE can upgrade control planes and nodes to the following new versions with this release:

Extended channel

  • Version 1.35.6-gke.1250000 is now the default version for cluster creation in the Extended channel.
  • The following versions are now available in the Extended channel:
  • The following versions are no longer available in the Extended channel:
    • 1.30.14-gke.2846000 is deprecated in the Extended channel. This version will be removed in 90 days, or at the end of support, if sooner.
    • 1.31.14-gke.2437000 is deprecated in the Extended channel. This version will be removed in 90 days, or at the end of support, if sooner.
    • 1.32.13-gke.2137000 is deprecated in the Extended channel. This version will be removed in 90 days, or at the end of support, if sooner.
    • 1.33.13-gke.1011000
    • 1.34.9-gke.1131000
    • 1.35.6-gke.1127000
    • 1.36.0-gke.4447000 is deprecated in the Extended channel. This version will be removed in 90 days, or at the end of support, if sooner.
    • 1.36.0-gke.4681000 is deprecated in the Extended channel. This version will be removed in 90 days, or at the end of support, if sooner.
  • Clusters in this channel running the listed minor version have new general auto-upgrade targets. GKE can upgrade control planes and nodes to the following new versions with this release:

No channel (deprecated)

Change

(2026-R32) Version updates

  • Version 1.34.9-gke.1065000 is now the default version for cluster creation in the Stable channel.
  • The following versions are now available in the Stable channel:
  • The following versions are no longer available in the Stable channel:
    • 1.33.12-gke.1165000 is deprecated in the Stable channel. This version will be removed in 90 days, or at the end of support, if sooner.
    • 1.34.8-gke.1278000
  • Clusters in this channel running the listed minor version have new general auto-upgrade targets. GKE can upgrade control planes and nodes to the following new versions with this release:

Change

(2026-R32) Version updates

Change

(2026-R32) Version updates

Change

(2026-R32) Version updates

Change

(2026-R32) Version updates

  • Version 1.35.6-gke.1250000 is now the default version for cluster creation in the Extended channel.
  • The following versions are now available in the Extended channel:
  • The following versions are no longer available in the Extended channel:
    • 1.30.14-gke.2846000 is deprecated in the Extended channel. This version will be removed in 90 days, or at the end of support, if sooner.
    • 1.31.14-gke.2437000 is deprecated in the Extended channel. This version will be removed in 90 days, or at the end of support, if sooner.
    • 1.32.13-gke.2137000 is deprecated in the Extended channel. This version will be removed in 90 days, or at the end of support, if sooner.
    • 1.33.13-gke.1011000
    • 1.34.9-gke.1131000
    • 1.35.6-gke.1127000
    • 1.36.0-gke.4447000 is deprecated in the Extended channel. This version will be removed in 90 days, or at the end of support, if sooner.
    • 1.36.0-gke.4681000 is deprecated in the Extended channel. This version will be removed in 90 days, or at the end of support, if sooner.
  • Clusters in this channel running the listed minor version have new general auto-upgrade targets. GKE can upgrade control planes and nodes to the following new versions with this release:

Google SecOps Marketplace

Change

Google Chronicle: Version 91.0

  • Updated Wiz Defend alert naming format in the following connector:

    • Google Chronicle - Chronicle Alerts Connector

Looker

Announcement

From July 27 through July 30, 2026, the following features will be automatically enabled for Looker (original) instances running Looker 26.12.

Feature

Looker admins now have the ability to configure a Looker instance to require multi-factor authentication (MFA) whenever a user tries to log in by using an email and a password. This feature is enabled by default.

Feature

The custom calendar feature is now generally available.

Feature

Localization is now supported for the dimension_group parameter. You can localize the timeframes, intervals, or custom timeframes generated by a dimension group by providing translations in your locale strings files. For more details, see Localizing dimension groups.

Note: This item was added on August 5, 2026.

Feature

The Expression Assistant is now generally available.

Feature

The Enhanced search feature is now generally available.

Feature

Looker Continuous Integration (CI) now supports email alerts. When you create or edit a CI suite, you can enable the Enable email alerts toggle to specify email recipients and select which run statuses will trigger emails (Failed, Error, Passed, or Cancelled). For more information, see Set up alerting.

Feature

The LookML Projects page has been updated with a more performant tabbed layout, which features three tabs: Models and Projects, Pending Projects, and Marketplace Projects.

Feature

The New Looker Explore and Merge Query Experience preview feature is now enabled by default.

Note: This release note was added on August 21, 2026.

Feature

Now available in preview, the new Modern User Interface feature enables modernized layouts and design alongside new configuration settings for visualizations and dashboards. When this preview feature is enabled, users can apply a Modern visualization theme that features updated typography and modern, accessible color palettes for improved data legibility. Additionally, a new Modern dashboard style provides a high-density, streamlined design that optimizes data viewing and aligns with Google's latest design standards.

Feature

Now available in preview, verified queries (also referred to as golden queries) are predefined pairs of natural language questions and their exact, corresponding Looker Explore queries that act as verified standards of truth to teach your Explore data agent how to handle complex business requests without guessing.

To enable verified queries, a Looker admin must turn on the Verified Queries setting on the Gemini in Looker admin page. The Conversational Analytics setting must also be enabled for verified queries to be used.

Change

When you chat in Gemini Enterprise with data agents that you create in Looker, agent responses now include charts and visualizations.

Change

The Insight Assistant now displays the process the assistant uses to generate the response, showing key details in your data that it used to generate the response, and listing the fields from your Explore that it used.

Managed Service for Apache Spark

Announcement

New Managed Service for Apache Spark on Google Kubernetes Engine (formerly Dataproc on Google Kubernetes Engine) subminor image version:

  • 3.5-dataproc-28

Key updates in this image version include:

  • Conda channels: The new 3.5-dataproc-28 subminor image version doesn't have preconfigured Conda channels, and is mapped to default aliases (such as 3.5 and latest).
    • Impact: When creating clusters with 3.5-dataproc-28 or using default aliases (3.5, latest), packages cannot be installed using Conda unless channels are manually configured during cluster initialization.
    • Mitigation: If your workloads require preconfigured Conda channels, pin your clusters to the previous image versions before August 25, 2026.
    • Default change schedule: All workloads must transition to image versions without preconfigured Conda channels after August 25, 2026 since the use of prior subminor versions with preconfigured Conda channels will be disallowed.

You may need to delete and replace existing clusters After August 25, 2026, existing clusters created with images that have preconfigured Conda channels (even if cluster jobs don't use Conda to install packages) need to be deleted and replaced with new clusters created or recreated with images that don't have preconfigured Conda channels.

Oracle Database@Google Cloud

Feature

Oracle Database@Google Cloud supports customer-managed encryption keys (CMEK) for Exascale VM Clusters. You can enable CMEK on Exascale VM Clusters. This feature is generally available (GA).

Service Usage

Deprecated

Support for managing Model Context Protocol (MCP) endpoint enablement using the Service Usage v2beta API is shut down.

For more information, see Feature deprecations.

Virtual Private Cloud

Feature

General Availability: You can use the Resolve subnet mask setting on a subnet to configure all attached Compute Engine instances with the same netmask as the subnet (instead of /32). Configuring larger instance netmasks lets compute instances discover the MAC addresses of other machines within the same subnet and directly communicate with them by using destination MAC addresses.

For more information, see Compute instance netmasks.