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Why I'm Returning to IPv4 After Trying IPv6 Only Network

Content Introduction

A network engineer shares hands-on experience with IPv6-only home networking, detailing challenges with ISP prefix delegation changes, the need for personal IP address ownership, and practical barriers that led to returning to IPv4 despite IPv6's technical advantages.

Key Information

  • 1ISP prefix delegation changes break static IPv6 addressing when switching services
  • 2IPv6 requires NAT64 (Tega) to access IPv4-only websites, adding complexity
  • 3Home users cannot easily obtain permanent, personally-owned IPv6 address ranges
  • 4Vendor support for IPv6 often feels like an afterthought rather than native implementation
  • 5Dual-stack operation increases complexity without clear benefits for most home users
  • 6ISP support for IPv6 issues remains inadequate for reliable home deployment

Content Keywords

#Prefix Delegation

ISP-assigned IPv6 address ranges that can change with service modifications

#NAT64

Network Address Translation between IPv6 and IPv4 requiring additional infrastructure

#Address Ownership

Inability for home users to obtain permanent, personally-owned IPv6 address space

#Dual Stack

Running both IPv4 and IPv6 simultaneously, increasing complexity

#ISP Support

Inadequate technical support for IPv6 issues from internet service providers

Related Questions and Answers

Q1.What is the main problem with ISP-provided IPv6 prefixes?

A: ISPs can change prefix delegations when services change, breaking static addressing and requiring complete network reconfiguration, unlike IPv4 where private addressing remains stable.

Q2.Why does IPv6 require NAT for accessing IPv4 content?

A: Many websites remain IPv4-only, requiring NAT64 translation that adds complexity and potential points of failure to what should be simpler end-to-end communication.

Q3.What prevents home users from obtaining permanent IPv6 addresses?

A: Regional internet registries require business justification for address allocations, making it difficult for individuals to obtain personally-owned IPv6 address space.

Q4.How does dual-stack operation affect network complexity?

A: Running both protocols requires maintaining two network stacks, doubling configuration work and troubleshooting complexity without clear benefits for most home use cases.

Q5.What are the practical barriers to IPv6 adoption for home users?

A: Inadequate ISP support, vendor implementation that feels like an afterthought, and the overhead of maintaining compatibility with the still-dominant IPv4 internet ecosystem.

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