Objectives
The simulator ticks each one as soon as the network meets it.
Enable IPv6 routing on R1 and R2 (ipv6 unicast-routing).
Address R1: LAN 2001:db8:1::1/64, link 2001:db8:12::1/64, and link-local FE80::1 on the link.
Address R2: link 2001:db8:12::2/64 and LAN 2001:db8:2::1/64.
On R1, route 2001:db8:2::/64 to 2001:db8:12::2.
On R2, send a default route ::/0 out the link interface to the link-local next hop FE80::1.
PC1 runs ipv6 autoconfig (SLAAC) and pings 2001:db8:2::10.
Before you start
Cisco routers forward IPv6 only after ipv6 unicast-routing, which also starts router advertisements. A link-local next hop is only valid together with the exit interface. SLAAC builds the host address from the /64 prefix and the EUI-64 interface ID.
Concept
IPv6 addressing and SLAAC
IPv6 addresses are 128 bits. Every interface has a link-local address (fe80::/10) used on the local link, plus global addresses. With SLAAC, a host builds its own global address from the prefix its router advertises — no DHCP server needed.
