[lug] Little Network problem

[Michael Hirsch]

On Wed, Sep 10, 2008 at 10:18 AM, gordon.golding at colorado.edu
<gordongoldin at aim.com> wrote:
>
> I have DSL.  As I understand it, I only have 1 IP because the mask limits me
> to 4: network, broadcast, .1 for the modem, .2 for ONE PC.
>
> I have a new PC.  Since I'll never have them up at once, I thougtht I'd add
> a little linksys hub and leave them both connected.  Then each should get an
> IP when it boots.
>
> BUT - I can't get an IP through the hub.
> AND - I connect a PC directly to the DSL Modem, I get IP .2,  I stick the
> hub in the middle, for about 30 seconds I am still IP .2 and can get to the
> control Web Page on the Modem.
>
> Then my IP disappears, no access to the Modem.  What is happening?

Some ISPs will restrict your modem to only server addresses to one MAC
address.  It might react badly to you switching PCs unless you are
also MAC spoofing.

Michael