Dynamic DNS (IPv4 and IPv6) with Linode
Here be dragons! This post is more than three years old. The information and advice it presents may be deprecated, wrong, or unvise. Thread with cation.
Do you have have free dynamic DNS through no-ip.com?
Your free host hildenae.no-ip.org, will expire in 7 days due to account inactivity.
hildenae.no-ip.org was last updated on <some-datetime-in-the-past>. Free Dynamic DNS hosts must be updated by logging into your account on our website and clicking update, this must be done every 30 days. If you are using the Dynamic Update Client and your IP address has not changed within the past 30 days, you must manually update it to prevent them from being removed from our system.
Yeah. With a mostly static IP from my school, that started to get annoying after five or six times.
Did you know Linode supplies free DNS hosting if you have a VPS with them? Well, now you do.
Their DNS manager is also avalible via their API, and said API has a CPAN module avalible. I see a homebrewed solution comming up.
Linode has done most of the work for us - if you download and
extract the module, you will find
examples/dyndns.pl. This example however only works on IPv4,
and uses an external service to determine the address. I hate
bother rely on
external services for things like getting IP addresses, and because
we have proper IPv6 routing here, having a AAAA record for my IPv6
address is also important.
The code and stuff
For the lazy of you, INET6Glue will hotpatch LWP do support IPv6 requests,
and icanhazip.com supports the lookup of IPv6 (and 4) adresses.
I however, preffer to ask the hardware directly. For the IPv4 adress
and for the temporary IPv6 address
The default script only lets you update a single host, and not both A and AAAA records if they are defined, but that will have to be a task for another day.