A device can have multiple adressess
- Unspecified/llpback/compatible-IPv4 address, ::0/96
- Mapped IPv4 addresses, ::ffff:0.0.0.0/96
- Reserved for NSAP Allocation (RFC 18888), 200::/7
- Reserved for IPS Allocation, 400::/7
- Link Local Address, fe80::/10
- Site Local Address, fec0::/10
- Global Unicast Address, 2000::/3
- similar to IPv$ address space.
- Local IPv& Unicast addresses (proposed), fc00::/7
- Multicast, ff00::/8
And can send one of these Packet Types
- Unicast
- Multicast
- Anycast
Header is 128 bits in comparision to 32 bit in IPv4.
Source: