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runtime, tailscale, elixir, python: support peer lookup by ip#145

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npry wants to merge 3 commits intomainfrom
npry/ip_lookup
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runtime, tailscale, elixir, python: support peer lookup by ip#145
npry wants to merge 3 commits intomainfrom
npry/ip_lookup

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@npry npry commented Apr 27, 2026

Two separate functions are supported: lookup by tailnet IP (unambiguous) and lookup by accepted routes. The accepted routes lookup may in principle return more than one answer, e.g. if there are two subnet routers active on the same subnet.

The short-term motivation here is to support identity integrations, e.g. answering "what peer is responsible for this request?" in the axum example, as a piece of the puzzle for application capability rules

@npry npry marked this pull request as ready for review April 27, 2026 22:36
npry added 3 commits April 27, 2026 18:49
Signed-off-by: Nathan Perry <nathan@tailscale.com>
Change-Id: I2ee105905ac575b4f83c0dbae7e35d466a6a6964
Signed-off-by: Nathan Perry <nathan@tailscale.com>
Change-Id: I5a6e7e7e9b1cd186bbfdb39f6c2b54cc6a6a6964
Signed-off-by: Nathan Perry <nathan@tailscale.com>
Change-Id: I5f411617ddbfe22b2390ad08355021256a6a6964
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