Multiple DHCP'd addresses on one NIC

[Jeff Vian]

On Fri, 2005-03-11 at 15:07 -0800, Aaron O'Hara wrote:
> On Fri, 2005-11-03 at 23:56 +0100, Alexander Dalloz wrote:
> > Am Fr, den 11.03.2005 schrieb Aaron O'Hara um 23:26:
> > 
> > > I have my firewall connected to my cable modem with one a single NIC.
> > > (I have another NIC for my LAN).  My public NIC is set to DHCP an
> > > address from my ISP.
> > > 
> > > Is it possible with Fedora to setup multiple virtual adapters that have
> > > unique MAC addresses (that I generate) that all DHCP an address from my
> > > ISP?  This way, I'd have multiple public IPs bound to one physical
> > > adapter.
> > 
> > You really think the ISP would assign you several IPs this way? I don't
> > believe that. At least it would be some kind of misuse.
> > 
> > I suggest you ask your provider for official possibilities or rent a
> > server with multiple public IPs in a computer center (rack center).
> > 
> > Alexander
> > 
> 
> My ISP officially allows for multiple dynamic IPs on a single account
> (Shaw in British Columbia, Canada).  It's an official option, but
> currently requires 1 NIC per IP.  I already have 3 public IPs spread
> over 3 machines.  I want to amalgamate them to one 'box' for centralized
> firewall purposes.
> 
> Aaron
> 

Maybe someone with definitive information can chime in here, but AFAIK
an IP is tied to the adapter by MAC address..  Unless you have a device
with a different MAC address it always seems to get just one IP no
matter how many times you make a lease request.

Aliased interfaces would still have the same hardware address, so I
don't see how this would work.

Now, if you have static IPs, then the MAC address is not a factor in setting the IP.