Please let us know if you try it and are able to get it to work.
With tcpser on a RS232 port can do modems over the Internet. It works super good. The commodore user port goes to a RS232 to Ethernet using tcpser.
Leif knows all about getting 64s connected to the Internet. He wrote the Commodore 64 Telnet BBS Server (see home.ica.net/~leifb/bbs/) which is indirectly responsible for my staying up until 5am last night and as a result feeling like a zombie today. Gee, thanks a lot, Leif.