I got the subnet: 2a01:4f8:110:5461:: / 64 – with the gateway address 2a01:4f8:110:5460::1, which is outside of the given subnet. So how to setup all the stuff on an openSUSE, resp. SLES?
Well, first start with adding the IPv6 addresses – which is simple. Just add them (via YaST or manually) in the same way as you add IPv4 addresses on your interface. In the end, my file /etc/sysconfig/network/ifcfg-eth0 looks like this:
BOOTPROTO='static' IPADDR='22.214.171.124/26' BROADCAST='' STARTMODE='auto' NAME='RTL8111/8168B PCI Express Gigabit Ethernet controller' PREFIXLEN='26' ETHTOOL_OPTIONS='' MTU='' NETWORK='' REMOTE_IPADDR='' USERCONTROL='no' IPADDR_0='126.96.36.199/26' LABEL_0='nagios' IPADDR_1='188.8.131.52/26' LABEL_1='svn' IPADDR_2='184.108.40.206/26' LABEL_2='mail' IPADDR_3='2a01:4f8:110:5461::18/64' LABEL_3='v6www' IPADDR_4='2a01:4f8:110:5461::26/64' LABEL_4='v6nagios' IPADDR_5='2a01:4f8:110:5461::30/64' LABEL_5='v6svn' IPADDR_6='2a01:4f8:110:5461::33/64' LABEL_6='v6mail'
and to get the routing up and running for both, IPv4 and IPv6, my file /etc/sysconfig/network/routes has the following entries:
# destination ; gateway ; netmask ; interface 2a01:4f8:110:5460::1 - - eth0 default 2a01:4f8:110:5460::1 - eth0 default 220.127.116.11 - -
..and you are done. Just run rcnetwork restart afterwards and enjoy the next generation IP addresses. If you configured your SuSEfirewall2 the right way shows SuSEfirewall2 status – you should see some of those “::/0” rules there.
Setting up the needed DNS entries and finetuning your firewall and applications is of course also needed.