Module 16
IPv6 basics
The address space built to last. Read and shorten 128-bit addresses, see a host configure itself, and learn how IPv6 runs beside IPv4.
Start lesson 1
How do you read an IPv6 address? · 8 min · free, no account
NetworkOpen now
What you'll operate
- Address format and types
- SLAAC and neighbor discovery
- Living with dual stack
- lessons
- 6
- minutes
- 52
Lessons in this module
- 1How do you read an IPv6 address?See why the internet needed longer addresses, then shorten them and write them back out in full.Free, no account8 min
- 2How are an address and its subnet written the standard way?Write the one canonical spelling, find the /64 an address belongs to, and count subnets in hex.Plus9 min
- 3What kind of address is this?Tell link-local, unique local, global and multicast addresses apart, and see why one interface holds several.Plus8 min
- 4How does a host find its neighbor without ARP?Follow a neighbor solicitation and advertisement, build the multicast group they use, and see what breaks when ICMPv6 is blocked.Plus9 min
- 5How does a host get its addresses with no server?Watch a phone configure itself from a router advertisement, check for duplicates, and see where DHCPv6 fits.Plus9 min
- 6What changed in the packet, and how do IPv4 and IPv6 share a network?Read the fixed 40-byte header, see why routers no longer fragment, and find the security gap that dual stack opens.Plus9 min
Lesson 1 is open to everyone, with no account. The other lessons in this module are part of Plus.