I am having an IP issue.  This only just started.  All devices are working fine, macbook pro, iphones, ipads, etc.  One of my laptops, a macbook air keeps telling me "No IP address" or "self assigned IP address can't connect" and won't connect to the network on EERO.  If I switch and connect direct to the Xfinity wifi it works and if I use the laptop in other places (friend's house, etc) it works.  So this issue is strictly this macbook air on my eero network.  Any ideas what could be causing this and how to fix it?  Thanks...(all other devices on the eero network are working fine)