Ok, here's a serious puzzle; i'm totally unable to solve it, even after
years of experience with Windows 2000 and 2003's RRAS.
I'm trying to use Windows Server 2008's Routing and Remote Access Server to
share an ADSL connection which uses PPPoE, but I'm having no luck; the
server version is 2008 R2, but I've read the same happens with "old" Server
I can setup the connection as a broadband Internet connection in Windows,
and it works.
I can share it using Internet Connection sharing, and it works (but it's not
what I need).
I have installed and enabled the Routing and Remote Access Service and
configured it for NAT with a demand-dial interface; I created the
aforementioned interface using PPPoE, with the exact same parameters used on
the Windows connection; I connected it, and it seems to work: I can also see
it gets its public IP address and DNS assigned correctly.
But it just doesn't work.
The server has no Internet connectivity at all, and PINGing anything on the
Internet results in a cryptic "general error".