Network Presence Blog

We’ve provided IPv6 connectivity for our VPS and Colo customers for many years (5+) now and here’s some information on how to use and configure your IPv6 connectivity on your VPS at Network Presence.

Firstly, our network does auto-assignment of IPv6 addresses and this is “on by default” for all of our customer VPS images and Linux operating system versions.

You can turn off this auto-assigment of IPv6 addresses by setting the following in your /etc/sysctl.conf file:

net.ipv6.conf.all.autoconf = 0
net.ipv6.conf.all.accept_ra = 0

You can also completely turn off all IPv6 usage on your Linux VPS with the following set in /etc/sysctl.conf :

net.ipv6.conf.all.disable_ipv6 = 1

Or run the command as root: sysctl -w net.ipv6.conf.all.disable_ipv6=1
(note: no spaces around ‘=’ character in the sysctl command-line)

Finally, you can set your own specific static IPv6 address by using the following calculation for determining your static IPv6 address from your IPv4 address:

If your IPv4 address is 2.3.4.5, then your static IPv6 address is: 2400:c400:1002:11:2:3:4:5 and the IPv6 “Netmask” is 64 and the IPv6 Gateway is: 2400:c400:1002:11::87

Please feel free to contact us if you’d like more details or help with your IPv6 use and settings at Network Presence.

FYI and regards,
Richard.