IPv6
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The latest version of the Internet Protocol, designed to replace IPv4. IPv6 uses 128-bit addresses (e.g., 2001:0db8::1) compared to IPv4's 32-bit addresses (e.g., 192.168.1.1), providing a vastly larger address space. IPv6 eliminates the need for NAT, includes built-in IPsec support, and simplifies routing. DNS AAAA records map domain names to IPv6 addresses. Dual-stack deployments run IPv4 and IPv6 simultaneously during the transition.
Related Protocols
Mentioned in Guides
HTTP Proxy Headers: X-Forwarded-For, Via, and Forwarded
HTTP Fundamentals
Step-by-Step DNS Troubleshooting with dig and nslookup
Debugging & Troubleshooting
DNS Record Types Explained: A, AAAA, CNAME, MX, TXT, and Beyond
DNS & Networking
Essential Network Debugging Tools: ping, traceroute, mtr, and tcpdump
DNS & Networking
RFC 959: FTP Protocol Deep Dive
Protocol Deep Dives
Migrating from HTTP/1.1 to HTTP/2
Migration & Upgrades