Even foods that are good for your health may have some properties that make them less than ideal. And some things that you eat are just plain bad for you. Lectins are often cited as a property in foods that you should avoid.
DS-Lite is an IPv6 migration technology, where the access network of the service provider is running IPv6.
Another DS Lite model, depicted in Figure 3, implements DS Lite on an individual end system rather than on a CPE device. The device is dual stacked, and so can send and receive both IPv4 and IPv6 packets.