IPv6

Question 1

the first 64 bits of an IPv6 address, used for routing; it is further broken down into the global routing prefix and the subnet ID

Answer 1

network prefix

Question 2

the last 64 bits of an IPv6 address, representing the user address, which is generated by the NIC

Answer 2

interface ID

Question 3

the size of the network prefix, designated by “/x”

Answer 3

prefix length

Question 4

the IPv6 equivalent of IPv4’s APIPA/zeroconf address local address; it is automatically generated upon boot, and the prefix is always fe80::/10

Answer 4

link-local address

Question 5

the last 64 bits of an IPv6 address on old OS’s, generated by using the device’s MAC address

Answer 5

Extended Unique Identifier, 64-bit (EUI-64)

Question 6

a file on a DNS server that holds the IP addresses of the root servers

Answer 6

root hints

Question 7

a unicast address for the closest machine/server in a cluster (if more than 1) to a router (for DNS, only the biggest Tier 1 Internet routers)

Answer 7

anycast address

Question 8

an IPv6 address given to a client by a router; upon boot, the client sends a router solicitation message on ff02::2, after which the router returns the prefix; the client then creates the rest of the address; as a true Internet address, another computer running IPv6 with this address can access this client unless a firewall is installed

Answer 8

global unicast “global” address

Question 9

a feature ones needs to enable on a router to allow router solicitation; it tells the routers to go upstream to the ISP to get the prefix to hand out

Answer 9

prefix delegation

Question 10

Tier 1 routers connecting to other Tier 1 routers that have no default route to send packets with unknown destinations

Answer 10

no-default routers

Question 11

protocol that makes IPv6 automation work, which consists of five packets: neighbor solicitation, neighbor advertisement, router solicitation, router advertisement, redirect

Answer 11

Neighbor Discovery Protocol (NDP)

Question 12

DHCPv6 server similar to that of IPv4, passing out IP info like addresses, default gateways, and DNS servers

Answer 12

stateful DHCPv6 server

Question 13

DHCPv6 server that uses router advertisements to give some info to hosts; gives small changes compared to that of regular router advertisements, like the DNS server

Answer 13

stateless DHCPv6 server

Question 14

tunnel where IPv4 traffic is encapsulated into an IPv6 tunnel so that it can reach an IPv6 capable router, using a downloaded tunneling client

Answer 14

4to6

Question 15

one of the most popular IPv6 tunneling standards, one of only two that can go through IPv4 NAT (NAT traversal)

Answer 15

6in4

Question 16

second NAT traversal IPv6 protocol, built in Windows; addresses start with 2001:0000:/32

Answer 16

Teredo

Question 17

open source implementation of Teredo for Linux/UNIX

Answer 17

Miredo

Question 18

IPv6 protocol that works by adding an IPv4 address to an IPv6 prefix

Answer 18

Intra-Site Automatic Tunnel Addressing Protocol (ISATAP)

Question 19

company? That creates the tunnel and usually offers a custom-made endpoint client for one’s use, though one can make a manual connection

Answer 19

tunnel broker

Question 20

one of automatic configuration protocols used by many brokers; it sets up the tunnel and handles configurations plus login

Answer 20

Tunnel Setup Protocol (TSP)

Question 21

another automatic configuration protocols used by many brokers; it sets up the tunnel and handles configurations plus login

Answer 21

Tunnel Information and Control (TIC) protocol

Question 22

a tunnel that allows two IPv6 networks to connect over an existing IPv4 infrastructure, like the Internet

Answer 22

overlay tunnel

Question 23

feature of some routers that allows them to run both IPv4 and IPv6; the routers connect IPv6 networks to IPv4 infrastructure

Answer 23

dual stack

Question 24

tunnel that creates a simple point-to-point connection between two IPv6 networks, good for regular, secure (Ipsec) communication

Answer 24

manual tunnel

Question 25

transition mechanism that embeds IPv4 packets into IPv6 packets for network traversal

Answer 25

NAT64