Actually sorry, it looks like we aren't able to correct the stage for you
in the tool. Please set the stage to "prepare to ship", the tool will
require you to get (for example) Enterprise approval for shipping a
breaking change.

Rick

On Wed, Oct 7, 2026 at 5:27 PM Rick Byers <[email protected]> wrote:

> It looks like this was removed from the spec here
> <https://github.com/WICG/local-network-access/commit/314cb7ad46d6c10a9498551a445a7cd7f3cfbc0c>,
> so I've added that as the spec link.
>
> Please request the additional reviews required for deprecation and removal
> (we upgraded the chromestatus entry from just 'plan' to a full removal
> since it appears that's what you're asking for).
>
> I assume this will have a killswitch, just in case some enterprise was
> somehow relying on it or something, right?
>
> LGTM2 conditional on the above.
>
> Rick
>
> On Wed, Oct 7, 2026 at 5:20 PM Chris Harrelson <[email protected]>
> wrote:
>
>> LGTM1
>>
>> On Wed, Sep 30, 2026 at 12:25 PM Hubert Chao <[email protected]> wrote:
>>
>>> One thing that may not be clear: the plan here is to remove the header
>>> directly without a deprecation trial.
>>> On Wednesday, September 30, 2026 at 3:22:59 PM UTC-4 Chromestatus wrote:
>>>
>>>> *Contact emails*
>>>> [email protected]
>>>>
>>>> *Explainer*
>>>> *No information provided*
>>>>
>>>> *Specification*
>>>> *No information provided*
>>>>
>>>> *Summary*
>>>> The Content Security Policy header treat-as-public-address was added as
>>>> part of Private Network Access to allow non-documents to declare themselves
>>>> as being in the public address space (
>>>> https://wicg.github.io/private-network-access/#csp). It is primarily
>>>> useful for testing.
>>>> https://github.com/WICG/private-network-access/issues/88 highlights
>>>> some issues with this header, and the decision was made to remove this
>>>> header instead of moving it somewhere else. For testing use cases, the
>>>> --ip-address-space-overrides command line flag can be used. This header was
>>>> only ever implemented in Chromium; Firefox has never implemented this
>>>> header and has no plans to. Safari has not implemented Private Network
>>>> Access or Local Network Access and so does not have the header either.
>>>>
>>>> *Blink component*
>>>> Blink > SecurityFeature > LocalNetworkAccess
>>>> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%20%3E%20SecurityFeature%20%3E%20LocalNetworkAccess%22>
>>>>
>>>> *Web Feature ID*
>>>> local-network-access
>>>> <https://webstatus.dev/features/local-network-access>
>>>>
>>>> *Motivation*
>>>> Header does not fit well into Content Security Policy, and it was
>>>> deemed unnecessary given the alternative of using
>>>> `--ip-address-space-overrides` Metrics show this is barely used:
>>>> https://chromestatus.com/metrics/feature/timeline/popularity/5983
>>>>
>>>> *Initial public proposal*
>>>> *No information provided*
>>>>
>>>> *Goals for experimentation*
>>>> None
>>>>
>>>> *Debuggability*
>>>> *No information provided*
>>>>
>>>> *Requires code in //chrome?*
>>>> False
>>>>
>>>> *Tracking bug*
>>>> https://issues.chromium.org/issues/527730705
>>>>
>>>> *Estimated milestones*
>>>>
>>>> No milestones specified
>>>>
>>>>
>>>> *Link to entry on the Chrome Platform Status*
>>>> https://chromestatus.com/feature/5187021965492224?gate=5964820426915840
>>>>
>>>> This intent message was generated by Chrome Platform Status
>>>> <https://chromestatus.com>.
>>>>
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>>
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