IPv6 in Fedora

We have configured a DNS server to run both IPv4 and IPv6 (Dual Stack). The configuration steps were as follows

1. Enable IPv6 Address


• Settings in the /etc/sysconfig/network-scripts/ifcfg-eth0

Add following parameters to the file
IPV6INIT=yes
IPV6ADDR=
IPV6_DEFAULTGW=



• Restart the network

/etc/init.d/network restart



• Check new settings

Use command ifconfig



• Use network utility tools to check the data transfer in IPv6

traceroute6 gatewayip

ping6 gatewayip

tcpdump -n ip6 ....



2. Configure DNS (BIND) to listen on IPv6 address as well


• Edit /etc/named.conf with following parameters

listen-on-v6 port 53 { ipv6_address_of_the_server;};


allow-query { 0.0.0.0/0; ::/0;};

Note: If this is a caching DNS server for all, above settings are ok, else configure 'allow-query' with your network settings



3. Enable firewall
• Edit /etc/sysconfig/ip6tables

add rules as you did in iptables

Good references
http://www.cyberciti.biz/faq/rhel-redhat-fedora-centos-ipv6-network-configuration/#comments
http://www.sixxs.net/wiki/IPv6_Firewalling