Boot up ipv6 in Linux

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To additionally set up IPv6 after starting an IPv4 interface, you can create a skipt, e.g.


The script contains all addresses you want to assign and set the routes.

# IP1
ifconfig eth0 inet6 add fe80::2/10
# IP2
ifconfig eth0 inet6 add fe80::3/10

# Routing
ip -6 route add fe80::2 dev eth0
ip -6 route add fe80::3 dev eth0
ip -6 route add default via fe80::1 dev eth0

You can check the created routes with

ip -6 route show