wgengine/magicsock: add docstring.
@@ -766,6 +766,10 @@ func newPinger(t *testing.T, logf logger.Logf, src, dst *magicStack) (cleanup fu
return cleanup
}
+// testActiveDiscovery verifies that two magicStacks tied to the given
+// devices can establish a direct p2p connection with each other. See
+// TestActiveDiscovery for the various configurations of devices that
+// get exercised.
func testActiveDiscovery(t *testing.T, d *devices) {
tstest.PanicOnLog()
rc := tstest.NewResourceCheck()
