FYI all prepare to ship approvals have been obtained.

Going ahead w/ removal, thanks all!

On Wed, Oct 14, 2026 at 11:19 AM Philip Jägenstedt <[email protected]>
wrote:

> LGTM4 (to reflect my approval in the tool to get that to 3xLGTM)
>
> On Mon, Oct 12, 2026 at 8:46 PM Alex Russell <[email protected]>
> wrote:
>
>> LGTM3, also contingent on all the other approvals (per Rick's note).
>>
>> Best,
>>
>> Alex
>>
>> On Wednesday, October 7, 2026 at 9:03:22 AM UTC-7 Hubert Chao wrote:
>>
>>> Set the stage; requested all of the prepare to ship approvals. I'll post
>>> here when I have all of the approvals.
>>>
>>> Forgot this was added to the LNA spec, I will note that it was in the
>>> LNA spec for less than 3 weeks (added Jun 15, 2026 here
>>> <https://github.com/WICG/local-network-access/commit/345eafde94fe9a3f81d29f6bed6d055643cd4717>,
>>> then removed Jul 6, 2026 here
>>> <https://github.com/WICG/local-network-access/commit/92657b3869920d973aea00c93e861c4b8751bda9>
>>> ).
>>>
>>> It was in the PNA spec (here
>>> <https://wicg.github.io/private-network-access/#csp>); the LNA spec
>>> copied the PNA text for the three-week period when we thought we would keep
>>> it, before deciding to remove it entirely.
>>>
>>> /hubert
>>>
>>>
>>> On Wed, Oct 7, 2026 at 11:32 AM Rick Byers <[email protected]> wrote:
>>>
>>>> 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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>>>>>>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/80795d4e-33ef-4636-a047-c3d289026300n%40chromium.org?utm_medium=email&utm_source=footer>
>>>>>>> .
>>>>>>>
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>>>>>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAOMQ%2Bw_a76_7KM6HyPbs%3DkLyWiLZ7bK%2BUUv6GjVJdgFUqCFvGw%40mail.gmail.com?utm_medium=email&utm_source=footer>
>>>>>> .
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>>
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