You’ve probably seen both IPv4 and IPv6 addresses without thinking much about them. But the transition from IPv4 to IPv6 is one of the most significant changes happening to the internet — and it affects South Africa in particular ways.
The Short Version
IPv4 addresses are 32-bit numbers (like 192.168.1.1) and there are about 4.3 billion of them. IPv6 addresses are 128-bit (like 2001:0db8:85a3::8a2e:0370:7334) and there are 340 undecillion of them — essentially unlimited.
Why IPv6 Matters
The world ran out of new IPv4 addresses years ago. South Africa, like many regions, relies on carrier-grade NAT (CGNAT) to share limited IPv4 addresses among many users. This means multiple customers share a single public IP address, which can cause issues with online gaming, certain VPN connections, and accessing your home network remotely.
IPv6 in South Africa
South African ISPs have been slower to adopt IPv6 than Europe or North America. Some major ISPs offer IPv6 support, but many don’t. This is gradually changing as the need for IPv6 grows.
Does IPv6 Affect Your Privacy?
In some ways, yes. Older IPv6 implementations could embed your device’s MAC address in the IP address, making you trackable. Modern IPv6 uses “privacy extensions” that randomise the host portion of the address, but not all networks have these enabled.
What This Means for You
For most everyday internet users in South Africa, the IPv4 vs IPv6 distinction doesn’t matter much. Your devices and operating systems handle the transition automatically. But if you notice issues with certain websites, online gaming, or VPN connections, IPv6 compatibility might be the cause.