IPv6 Support Test
IPv4 Address
IPv6 Address
Dual Stack
Preferred Protocol
What is IPv6?
IPv6 is the next-generation internet protocol solving IPv4 address exhaustion. Its 128-bit scheme provides ~340 undecillion addresses with built-in security, auto-configuration, and multicast improvements.
What is Dual Stack?
Dual Stack supports IPv4 and IPv6 simultaneously. During the transition period both protocols coexist. Most modern OSes and routers support dual stack by default.
IPv4 vs IPv6 — Key Differences
| Feature | IPv4 | IPv6 ✦ |
|---|---|---|
| Address length | 32 bits | 128 bits |
| Total addresses | ~4.3 billion | ~340 undecillion |
| Address example | 203.0.113.1 | 2001:db8::1 |
| NAT required | Yes (address saving) | Not needed |
| Built-in security | Optional (IPsec) | Built-in (IPsec) |
| Auto-configuration | DHCPv4 | SLAAC / DHCPv6 |
| Header size | 20–60 bytes (var.) | 40 bytes (fixed) |
| IPv6 adoption | Dominant today | ~40 % worldwide (2024) |
IPv6 Global Adoption (2024)~40 %
Source: Google IPv6 Statistics. Top regions: India, US, Germany lead adoption.