configure: vpn pptp

Hi all

I'd like to connect over pptp vpn.
I have my username, passwd and remote address. Then i start the connection and i see that over my ppp0 interface there's the same address in inet and P-t-P.
I think they should be different right?

Reading something i find out that i should change some routes.
Maybe i have to ask to the administrator or there's a common way to do that?

Thanks a lot

D