This is great feedback thanks and a very interesting point. Most laptops these days are constantly chatting towards the Internet, just have a look at wireshark! But, the local LAN tests are preceded by IPv4 and IPv6 Internet reachability tests (which the article mentions regarding only taking results from hosts that were concurrently online with dualstack lighthouse reachability. This test suite takes about 7 seconds total and records about 25-30 data points). If we re-run the test we could indeed let IPv6 go first or do them in parallel to account for any sleeping radios.