M. J. Fromberger 9cb071666c ipn/ipnlocal: update netmap cache after peer deltas are applied (#20111) ...

Add an UpdatePeers method to the cache. This allows us to support netmap peer deltas,
by allowing just the peers to be updated in an existing cache. As a safety check, reject
an update if there was no base netmap data to apply a change to.

Then, when processing peer mutations in the backend, capture any changes that should
be applied to the cache and update it, if one is enabled.

Updates #12542

Change-Id: I2f8790a8fdc5e85fce6700ba4821a8cb10dddffa
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>

2026-06-12 09:41:00 -07:00

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