None of the above I actually wrote the script about a month ago when I got the phone - just threw it in a debian package (mostly because I wanted to figure out how to do that).

What I am currently doing is using ipcheck.py's built-in feature where it can query the external IP address.

It goes something like:

./ipcheck.py -l -r checkip.dyndns.org:8245 $DYNDNS_USER $DYNDNS_PASSWORD $DYNDNS_HOSTNAME

Anyway - the package should only install 3 files really:

/etc/ipcheckrc
/etc/network/if-up.d/ipcheck
/opt/ipcheck/ipcheck.py

/etc/ipcheckrc is empty by default and if a /home/user/.ipcheckrc exists - that one will be used instead.

But first I want to figure out how to hack a simple gui to configure the 3 necessary values from the GUI.