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Vodafone disables IPv4 support on mobile broadband network

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Background

Vodafone Australia is a major telecommunications provider offering cellular data services via SIM-based mobile plans and fixed-wireless 4G/5G routers. Historically, Vodafone has positioned itself as a value-driven competitor to Telstra and Optus, often trading lower price points for a more condensed geographic coverage footprint.[1]

Incident

As of June 2025, Vodafone has moved to deprecate native IPv4 addressing on its mobile broadband APNs. While modern smartphones and PC operating systems utilize dual-stack or transition mechanisms (like DNS64/NAT64) to maintain connectivity, many legacy devices lack the internal protocol stack to communicate over an IPv6-only network.

Testing conducted by a consumer advocate, author of this article confirmed that the following devices fail to negotiate a connection when behind a Vodafone 4G/5G gateway:

  • **Gaming Consoles:** PlayStation 4 and Nintendo Switch (specifically affecting connection to Nintendo store ).
  • **Smart Media:** Various legacy Smart TV platforms and older IoT hardware.

This follows a long-standing history of inconsistent IPv4/IPv6 implementation within Vodafone's infrastructure, which has previously caused routing issues for Australian consumers.[2]

Vodafone's response

Vodafone technical support has stated that the removal of native IPv4 is a necessary step due to the global exhaustion of IPv4 addresses. Support representatives have indicated that IPv4 is considered a legacy protocol and suggested that competitors such as Telstra and Optus are moving toward similar IPv6-primary architectures.[3]


Possible Resolutions

Affected consumers may attempt the following workarounds to restore connectivity for non-IPv6 devices:

  • **APN Modification:** Manually forcing the APN protocol to "IPv4" in router settings (though this is increasingly being blocked at the network level).
  • **Layer 3 Translation:** Utilizing a Cisco router, Adaptive Security Appliance (ASA), or a Linux-based gateway to perform Network Address Translation (NAT) or tunneling.
  • **VPN Tunnels:** Using a router-level VPN that provides a consistent IPv4 endpoint for the local network. [4]


References

  1. ↑ WhistleOut, "Who has the best mobile coverage?", https://www.whistleout.com.au/MobilePhones/Guides/who-has-the-best-mobile-coverage
  2. ↑ Whirlpool Forums, "Vodafone IPv6," https://forums.whirlpool.net.au/archive/2770930
  3. ↑ Direct correspondence with Vodafone Technical Support, June 2025
  4. ↑ Cisco Troubleshooting, "Understanding Nat64" https://www.cisco.com/c/en/us/support/docs/ip/network-address-translation-nat/217208-understanding-nat64-and-its-configuratio.html


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