Use the Macbook to create a temporary wi-fi hotspot, then run tcpdump or Wireshark on the Mac to verify you are really receiving traffic from the Thinkpad. This could rule out DHCP issues.
Futher, you can Option+click the Wi-Fi icon in the menubar to open Wireless Diagnostics, some helpful tools there to capture traffic. Regards Lloyd Ed Heil wrote: > Yes, quite a lot of random traffic seems to be captured, some of it > identifiable as coming from other devices on my network (e.g. a > macbook is mentioned, and I think mdns is "Bonjour" traffic?). > 10.0.0.1 is my router obviously.
