The main source of slavery in this part of the world in the Middle Ages was indebtedness. In China, impoverished peasants frequently sold members of their own families into slavery, and throughout the entire medieval period criminals or members of their families became slaves of the state.
Nonetheless, NAT can introduce complications in communication between hosts.     * NAT(Network Address Translation) is most commonly used by broadband routers. NAT allows the router to assign non-publically routable IP addresses to the computers on the network.
Resolving NAT type issues with gaming consoles through a Linksys router. Network Address Translation (NAT) is the ability of a router to translate a public IP address to a private IP address and vice versa. It adds security to the network by keeping the private IP addresses hidden from the outside world.