nullExtDevice plugin Modem emulation in NullDC

So hello,

You probably see it from the title,I want to ask about the modem emulation in nullDC. I tested it on my laptop which has winPcap installed and I tried the IP provided at the Dreampipe website (search for it as I it won't let me post an URL) and put it to the "server_addr" setting in the "nullDC.cfg" file,I selected "modem" in the settings of the nullExtDevice plugin and started Sonic Adventure 1 but the "Internet" option in the menu was still gray and couldn't be selected,so I am asking,do I actually need the "DreamPi" thing or whatever it's called to connect to the internet with DC? If yes,is it possible or does any emulator actually emulate that thing or is it working for anyone? Or do I have to do something to unlock the option in Sonic Adventure? I know I probably won't get much from there but I didn't have a Dreamcast at the time the servers were online and now that someone revived them,I would really like to test but yeah,I don't really have a Dreamcast now too :/ Or is that any other way to make it working instead of the one I am trying?

Thanks :)