Say for example, I have cable modem service, and have several machines
sharing this connection via a store-bought broadband router. Now say I'm
running squeak on one of the networked machines, ie. 192.168.1.1.

Is it possible for me to get the global IP address of my cable modem, ie
216.109.125.71, without having to send a packet outside of my local
network?

Thanks,

Justin Holzer