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.
The NAT mechanism (natting) is a router feature, and is often part of a corporate firewall. 1  NAT gateways can map IP addresses in several ways: 2  From a local IP address to one global IP address statically; 3  From a local IP address to any of a rotating pool of global IP addresses a company may have;