IPv6 special addresses, such as Link Local Addresses, are IP addresses registered for specific reasons.

In this follow-up to last week’s episode IPv4 Special Addresses and IPv6 Adoption, Ed, Scott and Tom discuss IPv6 special address ranges, how they are used, and what to watch out for when using them.

Topics discussed include:

Understanding the special IPv6 ranges, including the ones used in production networks

Problems caused by the use of Unique Local Addresses (ULAs) and the operational circumstances where it’s OK to use them

The special prefix reserved for DNS64/NAT64 and whether it should be used in production networks

What IPv4-mapped IPv6 addresses are and when are they used

Thanks for listening!

Show Links:

IANA IPv6 Special-Purpose Address Registry – IANA

FE80::1 is a Perfectly Valid IPv6 Default Gateway Address – Infoblox

IPv6 Tunnel Broker

3 Ways to Ruin Your Future Network with IPv6 Unique Local Addresses – Infoblox

The Bogon Reference – Team Cymru

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