Merge branch 'master' into pmtu

internal/vpn/interfaces.go

@@ -100,3 +100,13 @@ type CmdStarter interface {
 		stdoutLines, stderrLines <-chan string,
 		waitError <-chan error, startErr error)
 }
+
+type HealthChecker interface {
+	SetConfig(tlsDialAddr string, icmpTarget netip.Addr)
+	Start(ctx context.Context) (runError <-chan error, err error)
+	Stop() error
+}
+
+type HealthServer interface {
+	SetError(err error)
+}