Is this true? I hadn't even noticed, because I assign every device a static DHCP assignment so I can categorize devices numerically. That is really messed up, and akin to what Google does with TCP/HTTP for connections to google.com in order to ensure it gets first byte faster. Companies are doing all sorts of "performance hacks" that just straight our break standards, and therefore break interop. I know for Apple devices I had to disable some standardize WiFi functionality on my access points because these devices cannot handle it despite claiming to support the standard.
The alleged violation is using the IP after the lease expires and before the issuance of a new lease. I don't know if that's true, since most DHCP clients request a new IP long before their lease expires to avoid this.
