Earlier this month we announced the release of IPv6 to our Linux® Virtual Dedicated Servers. We are monitoring IPv6 usage to ensure any concerns with the release are handled in a swift manner.
Recently we identified an issue with some utilities not being able to communicate outside of the Go Daddy network on IPv6. Services we know that don’t work are Telnet and Wget.
This happens because these services use the IP address from the default network interface. For IPv6 this is the primary IP for the server, which is not routable outside of our network by design.
However, there is a workaround for this issue.
Set the preferred_lft (Preferred Lifetime) flag to zero. This marks the address as deprecated. A deprecated address is still fully functioning, but is never used to source an outgoing request.
To do this, you need to run this command:
/sbin/ip -6 addr change PRIMARY_IP dev eth0 preferred_lft 0
where PRIMARY_IP is their primary IPv6 address.
We are updating our provisioning system to set this as part of the basic configuration, but only new and reprovisioned customers will get that update. In the meantime you can use this workaround to bypass the issue.