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feature/conn25: install all the hooks

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Install the previously uninstalled hooks for the filter and tstun
intercepts. Move the DNS manager hook installation into Init() with all
the others. Protect all implementations with a short-circuit if the node
is not configured to use Connectors 2025. The short-circuit pattern
replaces the previous pattern used in managing the DNS manager hook, of
setting it to nil in response to CapMap changes.

Fixes tailscale/corp#38716

Signed-off-by: Michael Ben-Ami <mzb@tailscale.com>
This commit is contained in:
Michael Ben-Ami
2026-03-26 16:38:04 -04:00
committed by mzbenami
parent 70fabf1716
commit 156e6ae5cd
4 changed files with 131 additions and 76 deletions
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feature/conn25/datapath.go
+2 -2
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@@ -37,8 +37,8 @@ type IPMapper interface {
// range for an app on the connector, but not mapped to the client at srcIP, implementations
// should return [ErrUnmappedSrcAndTransitIP]. If the transitIP is not within a configured
// Transit IP range, i.e. it is not actually a Transit IP, implementations should return
// a nil error, a zero-value [netip.Addr] to indicate this is potentially valid, non-app-connector
// traffic.
// a nil error, and a zero-value [netip.Addr] to indicate this is potentially valid,
// non-app-connector traffic.
ConnectorRealIPForTransitIPConnection(srcIP netip.Addr, transitIP netip.Addr) (netip.Addr, error)
}