Nick Khyl da0ea8ef3e Revert "ipn/ipnlocal: shut down old control client synchronously on reset"
It appears (*controlclient.Auto).Shutdown() can still deadlock when called with b.mu held, and therefore the changes in #18127 are unsafe.

This reverts #18127 until we figure out what causes it.

This reverts commit d199ecac80083e64d32baf3b473c67b11a6e6936.

Signed-off-by: Nick Khyl <nickk@tailscale.com>
2025-12-08 15:37:08 -06:00
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