Adding an IPv6 address:

ip -6 addr add <ipv6address>/<prefixlength> dev <interface>

Exapmle:

ip -6 addr add 2001:0db8:0:f101::1/64 dev eth0

Adding a IPv6 route

Using ip

ip -6 route add <ipv6network>/<prefixlength> via <ipv6address>

ip -6 route add 2000::/3 via 2001:0db8:0:f101::1

Using route:

route -A inet6 add <ipv6network>/<prefixlength> gw

Example:

route -A inet6 add 2000::/3 gw 2001:0db8:0:f101::1

testing

host google.com | grep v6

google.com has IPv6 address 2a00:1450:4001:80e::1006

ping6 -I eth0 2a00:1450:4001:80e::1006

ping6 -I eth0 2a00:1450:4001:80e::1006

PING 2a00:1450:4001:80e::1006 56 data bytes 64 bytes from 2a00:1450:4001:80e::1006: icmp_seq=1 ttl=56 time=5.80 ms