Add nameserver to resolv.config
nano /etc/resolv.conf
Add line for ipv6 nameserver
nameserver 2407:f800::113:23:133:101
nano /etc/sysconfig/network
Add a line at the bottom
NETWORKING_IPV6="yes"
nano /etc/sysconfig/network-scripts/ifcfg-eth0
Add lines at the bottom
IPV6INIT=yes
IPV6ADDR=
IPV6_DEFAULTGW=
Example:
IPV6INIT=yes
IPV6ADDR=2407:f800:101::2
IPV6_DEFAULTGW=2407:f800:101::1
Restart network
service network restart