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Clarify local hostname blocking on shared IP addresses - #26626

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@dvdksn dvdksn commented Nov 12, 2026

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Document when a denied host can remain reachable through an allowed host on the same IP address in local sandboxes. Cover encrypted request hostnames, later requests on reused cleartext connections, and connections that name no host, and link to the limitations from the network rule reference.

Validation: Markdown formatting, scoped rumdl and Vale checks, and the added link target check passed. Runtime enforcement was reviewed in code and tests but was not executed because the available Go toolchain is older than the required version.

Hostname deny rules can leave a denied host reachable through an allowed
host on the same address. Document the local hostname matching limitations
and link to them from the network rule reference.
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@dvdksn dvdksn added this to the sbx/v0.54.0 milestone Nov 12, 2026

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