Remember DNS64
Full name: DNS extensions for IPv6-to-IPv4 translation
Memory aid: DNS builds a Six-format answer from a Four-format address as a cue.
DNS64 commonly works with NAT64 and needs consideration of DNSSEC validation.
Study area: Protocols & logical ports · Batch 7
Relevant study for: CompTIA Network+ N10-009 · Cisco CCNA 200-301 · CompTIA A+ Core 1 220-1201 · CompTIA Security+ SY0-701 · ISC2 CISSP 2024 outline
Practice with exam flashcards →Networking & Connectivity / Knowledge library
DNS64 — DNS extensions for IPv6-to-IPv4 translation
Synthesizes IPv6 address answers from IPv4 records for supported translation workflows.
Why learn DNS64 — DNS extensions for IPv6-to-IPv4 translation?
Synthesizes IPv6 address answers from IPv4 records for supported translation workflows.
Where it came from
DNS64 commonly works with NAT64 and needs consideration of DNSSEC validation.
- Memory aid (a learning cue, not the expansion): DNS builds a Six-format answer from a Four-format address as a cue.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand DNS64: DNS extensions for IPv6-to-IPv4 translation.
- Recall this memory aid: DNS builds a Six-format answer from a Four-format address as a cue.
- Explain the practical use: Synthesizes IPv6 address answers from IPv4 records for supported translation workflows.
- Explain this distinction: DNS64 commonly works with NAT64 and needs consideration of DNSSEC validation.
- Identify DNS64 in a device specification, architecture diagram, or system inventory.
Documentation and sources
- IETF RFC 6147 (www.rfc-editor.org)