IPv6 explained: what is it, and why does it matter to you?

You may have heard of IPv6 — or perhaps spotted the term in your router settings — without ever quite figuring out what it is or why it matters.

This article will walk you through three things in plain language:

 What is IPv6?

 How does IPv6 differ from IPv4?

 How do ORIVISION video encoders support IPv6?

Part 1 — What is IPv6?

Let's start with IP addresses.

Every time you browse the web, watch a live stream, or access a security camera, devices are sending data back and forth. For that data to reach the right destination, every connected device needs a unique identifier — just like a postal address. That identifier is called an IP address.

The protocol most widely used today is IPv4, which supports approximately 4.3 billion unique addresses.

That sounds like a lot — until you consider that the world has 8 billion people, each with a smartphone, plus computers, cameras, tablets, and smart devices of every kind. 4.3 billion addresses simply isn't enough. In fact, the global IPv4 address pool was officially exhausted back in 2011.

The internet has been kept running through a workaround called NAT (Network Address Translation), which lets multiple devices share a single public IP. But NAT is a stopgap, not a solution.

Enter IPv6.

IPv6 is the sixth version of the Internet Protocol. Its defining change is expanding the address length from 32 bits to 128 bits.

 32-bit IPv4 supports ~4.3 billion addresses

 128-bit IPv6 supports ~3.4 × 10⊃3;⁸ addresses

Part 2 — How does IPv6 differ from IPv4?

More addresses is the most obvious advantage, but IPv6 improves on IPv4 in several other meaningful ways:

Direct connectivity

In the IPv4 world, most devices sit behind NAT, invisible to the public internet. Anyone who has set up remote camera access knows how painful NAT traversal can be. With IPv6, every device gets its own globally routable address, enabling direct connections without any NAT translation — simpler setup, lower latency.

Built-in security

IPv4 communication is not encrypted by default — security must be configured separately. IPv6 natively supports IPsec at the protocol level, providing baseline encryption and authentication for data in transit.

Better efficiency

IPv6 features a streamlined packet header, removing unnecessary fields so routers process packets faster. It also supports larger MTU (Maximum Transmission Unit) sizes, reducing packet fragmentation and improving overall throughput.

Part 3 — IPv6 support in ORIVISION video encoders

Now that we've covered the fundamentals, let's look at what this means in practice for ORIVISION products.

ORIVISION video encoders offer full IPv6 support across two layers: