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Difficulty: EasyIPv6 Addressing and Prefixes

Match each IPv6 address prefix on the left to its designated address scope or function on the right.

  • 2000::/3Global Unicast address range used for publicly routable Internet traffic
  • fe80::/10Link-Local address prefix used strictly for communication on the local layer 2 segment
  • fc00::/7Unique Local IPv6 address range used for non-routable private communication within an organization
  • ff00::/8Multicast address prefix used for one-to-many communication

Answer

2000::/3 matches Global Unicast, fe80::/10 matches Link-Local, fc00::/7 matches Unique Local, and ff00::/8 matches Multicast.
Each prefix correctly maps to its standard RFC-defined IPv6 address scope: 2000::/3 is Global Unicast, fe80::/10 is Link-Local, fc00::/7 is Unique Local, and ff00::/8 is Multicast.

Step-by-Step Solution

1
Identify the Global Unicast range
2000::/3 covers 2000:: through 3fff:ffff:ffff:ffff:ffff:ffff:ffff:ffff, which represents Global Unicast.
Standard IANA IPv6 allocation reserves 2000::/3 for public Internet routing.
2
Identify the Link-Local prefix
fe80::/10 covers fe80:: through febf::, which is reserved for Link-Local addresses.
Link-Local addresses are automatically configured on enabled IPv6 interfaces for local link communication.
3
Identify the Unique Local prefix
fc00::/7 covers fc00:: through fdff::, designated as Unique Local.
Unique Local addresses provide private addressing space within internal networks and are not routed on the global Internet.
4
Identify the Multicast prefix
ff00::/8 covers all multicast traffic.
IPv6 uses multicast exclusively instead of broadcast; all multicast addresses begin with ff00::/8.

Key Concept

IPv6 Address Scopes and Prefixes
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Topics

IPv6 Addressing and Prefixes

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