DDNS with NSD3?

You could use a private repo on bitbucket for this. You could then write a quick Python script, for example, to check if your repo has had any updates (recently) and then have it 'git pull'.

You could also write a cron job to just pull every so often and reload nsd3.

Or just a big for loop that SSHes in and does the needful.

-Tim

@Piki:

e.g. have a web page or a daemon on my 'Node that I can ping from my laptop to make the update happen?

single-packet auth for dynamic DNS? there's an idea!

I have a very simple CGI script that I call from my workstation every 5 minutes:

#!/usr/bin/perl

use Socket;

my $r=$ENV{'REMOTE_ADDR'};
$r=~s/^::ffff://;

print "Content-Type: text/plain\n\n";
print "You are: $r\n";

$host="my.dns.name";

@name=gethostbyname($host);
$ip=inet_ntoa($name[4]);

print "$host: $ip\n";

That'll return the value stored in DNS and the value of the client. In my case the client controls my own DNS server locally (linode is a slave server), but it'd be simple for this code to to compare $ip to $r and if it was different then perform a DNS update, depending on how you implement your DNS update code.

The client machine effectively then does a "wget http://my.server/dynamic_ip.cgi" via cron every 5 minues.