Wikipedia
In computer networking, a link-local address is a network address that is valid only for communications within the network segment or the broadcast domain that the host is connected to Link-local addresses are most often assigned automatically with a process known as stateless address autoconfiguration or link-local address autoconfiguration, also known as automatic private IP addressing or auto-IPLink-local addresses are not guaranteed to be unique beyond their network segment, therefore routers do not forward packets with link-local addresses IPv4 link-local addresses are assigned from address block 16925400/16 (16925400 through 169254255255)
Link-local address - Wikipedia, the free encyclopedia