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[Jeff Taylor <shdwdrgn AT sourpuss.net>]

For those that didn't hear, texnofobix has been busy with life and 
hasn't had the time to invest in setting up the .dyn zone for dynamic 
dns entries.  Since a lot of other code I have written recently applied 
directly to the ddns setup, I thought I would take over the zone and try 
to get something moving.

We should now be ready to start testing the new configuration.  You may 
log in and register .dyn domains at http://reg.dyn/
These domains will be very limited on what can be entered... You may put 
in A, AAAA, TXT, and RP records only.  Near the top of the window you 
will see a URI line for registering your IP address. Domain names may be 
between 3-32 characters, and you may register up to 2 new domains every 
7 days.

If you are not familiar with DDNS -- the idea is that if you have a 
computer that changes IP often, but you want a dedicated hostname that 
you can use to reach it, you use DDSN.  That computer sends a periodic 
signal to a server (in this case it will be the API server) which 
determines the current IP address and updates the information online.  
If I set up example.dyn to link to my home computer, then I could ping 
or ssh to example.dyn and it would link back to my computer.  Note there 
would be short periods of pointing to the old address when your IP 
changes as it takes time for the DNS updates to propagate to all tier-1 
servers.

The intended use is as follows:
- On the computer whose IP you wish to track, create a scheduled job 
that calls this URI (wget or curl would be typical).  It should be 
called at least every time you boot your computer, and once a day to 
refresh the data.  If your computer changes IP addresses frequently, you 
will want to run this more often.  You do not need to save any output 
from calling the URI, but if you paste it into a browser you will see 
some status info (FAIL if your credentials are invalid, or your current 
IP address).
- Renewing the IP will automatically renew registration of the domain 
name.  As long as you keep using it, you will not need to manually renew.
- DYN domains are only registered for 4 weeks (28 days).  If you stop 
renewing your IP, you will receive a warning email 7 days before the 
domain expires.  Either refresh your IP info again, or log in to 
http://reg.dyn/ and manually renew the domain.

Let me know if there are any questions, or if you see any bugs in the 
operation.