IPv6 Buzz 135: Making Sense Of IPv6 Address Formatting

Ed
Horley

Tom
Coffeen

Scott
Hogg

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In this episode, Ed, Scott, and Tom dive into the topic of IPv6 address formatting, the do’s and don’ts of representing an IPv6 address, and what guidance RFC 5952 provides for representing these very long addresses in text.

Topics discussed include:

  • The IPv6 address format (leading zeros, zero compression, case, etc.)
  • What RFC 5952 recommends (vs. what vendors implement and what users see)
  • Normalizing IPv6 address formatting for programmatic use and logging

Thanks for listening!

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Show Links:

RFC 5952: A Recommendation for IPv6 Address Text Representation – IETF

IP Version 6 Addressing Architecture – IETF

Postel’s Law – Wikipedia

Convert an IP address from its family-specific string format to a packed, binary format – Python.org

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