Extender changes IP addresss on the fly

Has it occurred to you that the change in ip address may be caused by the "break" rather that the cause of the "break"? Are you experiencing a similar change in address (or break in connection) with any other devices? In my experience, it's not unusual (in fact, it should be expected), for WiFi connected devices to momentarily loose their connections - one of the most annoying things I experienced was a particular USB WiFi adapter that would "chime" when it connected - I was only aware of the lost connection and how frequently it happened because of that chime. So ... - is it actually a problem? - is it a problem with your SBC? - is it a problem with the extender? - is it a problem with the router? You need to determine where the connection is being broken - my suspicion is between the router and the extender (because you say the SBC is connected to the extender via Ethernet) and I have one more question - is it the extender issuing the ip address or the router?