# since Ethernet MAC addresses are unique, auto configuration ensure that host IP addresses are also unique
# however, just to make sure, there is step 1
# step 1:
- host from a link local address using prefix 1111 1110 10 + [zeros] + interface ID
- host sends out a neighbour discovery (part of ICMPv6) using the link local address as the target address
- if another host on the network has the same link local address, it will reply ⇨ auto configuration fails
- otherwise, continue onto step 2