Month: August 2013

After preparing everything, we can start to configure different services now. The first one shall be bind9. There are lots of information out there about configuring bind9 for IPv4, so I assume that there is a bind already running.

A newly installed bind (remember I am mainly writing about Debian systems) has the following option configured in /etc/bind/named.conf.options


options {
listen-on-v6 { any; };
};


Thus this daemon listens on all IPv6 interfaces to answer queries.

In the next step we just need to configure AAAA-records for every IPv6-address that we want to distribute. They look like A-records:

dummyhea.ipv6.alteholz.net. IN A 78.47.192.125
dummyhea.ipv6.alteholz.net. IN AAAA 2a01:4f8:d12:1b03::dead:2


Voila, we are done:


~$ dig dummyhea.ipv6.alteholz.net AAAA

; <> DiG 9.8.4-rpz2+rl005.12-P1 <> dummyhea.ipv6.alteholz.net AAAA
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25822
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 5

;; QUESTION SECTION:
;dummyhea.ipv6.alteholz.net. IN AAAA

;; ANSWER SECTION:
dummyhea.ipv6.alteholz.net. 5706 IN AAAA 2a01:4f8:d12:1b03::dead:2



~$ ping6 -c5 dummyhea.ipv6.alteholz.net
PING dummyhea.ipv6.alteholz.net(2a01:4f8:d12:1b03::dead:2) 56 data bytes
64 bytes from 2a01:4f8:d12:1b03::dead:2: icmp_seq=1 ttl=49 time=66.8 ms
64 bytes from 2a01:4f8:d12:1b03::dead:2: icmp_seq=2 ttl=49 time=67.1 ms
64 bytes from 2a01:4f8:d12:1b03::dead:2: icmp_seq=3 ttl=49 time=66.8 ms
64 bytes from 2a01:4f8:d12:1b03::dead:2: icmp_seq=4 ttl=49 time=71.6 ms
64 bytes from 2a01:4f8:d12:1b03::dead:2: icmp_seq=5 ttl=49 time=66.3 ms

--- dummyhea.ipv6.alteholz.net ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4006ms
rtt min/avg/max/mdev = 66.378/67.782/71.678/1.969 ms


This was pretty easy.

New vServer from ispOne do get 10 IPv6 addresses. For old vServers you need to pay a fee (9.90 EUR) to move the vServer from the old host to a new one with IPv6 connectivity. As I don’t want to spend that money now, I skip tests with this server.

Unfortunately it is not possible to get an IPv6 address for servers at Server4You.

Every dedicated server at Strato can get an /56-IPv6-Subnet. Just activate IPv6 support on the control panel of that server and you will be informed about your subnet and the primary address of your server.

# configure address
/sbin/ip addr add <main ip address> dev eth3
# set default route
/sbin/ip route add default via fe80::1 dev eth3


In case everything was configured correctly you can test it with:

# ping6 -c5 ipv6.google.com
PING ipv6.google.com(ham02s11-in-x13.1e100.net) 56 data bytes
64 bytes from ham02s11-in-x13.1e100.net: icmp_seq=1 ttl=56 time=6.79 ms
64 bytes from ham02s11-in-x13.1e100.net: icmp_seq=2 ttl=56 time=7.24 ms
64 bytes from ham02s11-in-x13.1e100.net: icmp_seq=3 ttl=56 time=7.28 ms
64 bytes from ham02s11-in-x13.1e100.net: icmp_seq=4 ttl=56 time=7.28 ms
64 bytes from ham02s11-in-x13.1e100.net: icmp_seq=5 ttl=56 time=7.28 ms

--- ipv6.google.com ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4006ms
rtt min/avg/max/mdev = 6.793/7.177/7.287/0.213 ms


If you want to keep that settings permanently, put all command it /etc/rc.local

So there seems to be no problem with stand alone servers at Strato.

Every server at Hetzner will get a native /64-IPv6-Subnet routed to that server. Besides virtual servers, an additional /48 subnet might be requested. Reverse DNS entries can be configured with the Hetzner robot. On this webpage you can also see the assigned subnet and the default gateway for your server. So configuring IPv6 is pretty easy:

# configure address
/sbin/ifconfig eth0 inet6 add <ip address from subnet>
# activate ipv6 routing
/sbin/route -A inet6
# set default route
/sbin/route -A inet6 add ::/0 gw <Hetzner gateway>


In case everything was configured correctly you can test it with:

# ping6 -c5 ipv6.google.com
PING ipv6.google.com(fa-in-x69.1e100.net) 56 data bytes
64 bytes from fa-in-x69.1e100.net: icmp_seq=1 ttl=56 time=8.40 ms
64 bytes from fa-in-x69.1e100.net: icmp_seq=2 ttl=56 time=8.64 ms
64 bytes from fa-in-x69.1e100.net: icmp_seq=3 ttl=56 time=7.97 ms
64 bytes from fa-in-x69.1e100.net: icmp_seq=4 ttl=56 time=7.94 ms
64 bytes from fa-in-x69.1e100.net: icmp_seq=5 ttl=56 time=8.36 ms

--- ipv6.google.com ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4006ms
rtt min/avg/max/mdev = 7.948/8.267/8.640/0.266 ms


If you want to keep that settings permanently, put all commands in /etc/rc.local

So there seems to be no problem with stand alone servers at Hetzner.