Mandrake 10.1 - MAC Spoofing

Hi,

I have a simple, but annoying problem.

My cable modem is bound to the MAC address of my old computer. I have
managed to figure out how to spoof the address by adding MACADDR=xxxxxx in
ifcfg-eth0. However, for some reason, the MAC address is not spoofed
BEFORE dhclient kicks in. So when the network is brought up during
bootup, it just sits there for 2 minutes waiting until it times out. I
then have to manually do a ifdown eth0 & ifup eth0, which does the trick.

I will eventually register the new MAC address with the ISP, but thats a
pain in the butt, because they insist upon a site visit to do it, and I am
not here a lot of the time.

Is there a way to get the MAC address spoofed before dhclient runs, or is
there a mechinism within dhclient to spoof the address.

Its not a big deal issue, but its just one of those little annoyances that
I would like to clear up.


Thanks

On Sunday 27 March 2005 11:58, Mark stood up and spoke the following
words to the masses...:

>
> Hi,
>
> I have a simple, but annoying problem.
>
> My cable modem is bound to the MAC address of my old computer. I have
> managed to figure out how to spoof the address by adding
> MACADDR=xxxxxx in
> ifcfg-eth0. However, for some reason, the MAC address is not spoofed
> BEFORE dhclient kicks in. So when the network is brought up during
> bootup, it just sits there for 2 minutes waiting until it times out.
> I then have to manually do a ifdown eth0 & ifup eth0, which does the
> trick.
>
> I will eventually register the new MAC address with the ISP, but thats
> a pain in the butt, because they insist upon a site visit to do it,
> and I am not here a lot of the time.
>
> Is there a way to get the MAC address spoofed before dhclient runs, or
> is there a mechinism within dhclient to spoof the address.
>
> Its not a big deal issue, but its just one of those little annoyances
> that I would like to clear up.

Check out the /man/ page for *dhclient.conf.* ;-)

--
With kind regards,

*Aragorn*
(Registered Gnu/Linux user #223157)

Mark wrote:

>
> Hi,
>
> I have a simple, but annoying problem.
>
> My cable modem is bound to the MAC address of my old computer. I have
> managed to figure out how to spoof the address by adding
> MACADDR=xxxxxx in
> ifcfg-eth0. However, for some reason, the MAC address is not spoofed
> BEFORE dhclient kicks in. So when the network is brought up during
> bootup, it just sits there for 2 minutes waiting until it times out.
> I then have to manually do a ifdown eth0 & ifup eth0, which does the
> trick.
>
> I will eventually register the new MAC address with the ISP, but thats
> a pain in the butt, because they insist upon a site visit to do it,
> and I am not here a lot of the time.
>
> Is there a way to get the MAC address spoofed before dhclient runs, or
> is there a mechinism within dhclient to spoof the address.
>
> Its not a big deal issue, but its just one of those little annoyances
> that I would like to clear up.
>
>
> Thanks


Have you talked to your service provider's tech support to see if your
cable modem will re-initialize itself to accept the new MAC address?

I have trouble imagining a service provider that locks you into never
being able upgrade your computer or your ethernet card or never being
able to replace a card that has gone sour.

Usually all you have to do to reset the modem is to connect the system
up so that the modem can see your ethernet card then unplug power to
the modem for about 1/2 minute then plug it back in and let it recycle.


Clive

Mark wrote:

>
> Hi,
>
> I have a simple, but annoying problem.
>
> My cable modem is bound to the MAC address of my old computer. I have
> managed to figure out how to spoof the address by adding MACADDR=xxxxxx in
> ifcfg-eth0. However, for some reason, the MAC address is not spoofed
> BEFORE dhclient kicks in. So when the network is brought up during
> bootup, it just sits there for 2 minutes waiting until it times out. I
> then have to manually do a ifdown eth0 & ifup eth0, which does the trick.
>
> I will eventually register the new MAC address with the ISP, but thats a
> pain in the butt, because they insist upon a site visit to do it, and I am
> not here a lot of the time.
>
> Is there a way to get the MAC address spoofed before dhclient runs, or is
> there a mechinism within dhclient to spoof the address.
>
> Its not a big deal issue, but its just one of those little annoyances that
> I would like to clear up.
>
>
> Thanks

You didn't mention using a cable/dsl router. If you had a Linksys EtherFast
Cable/DSL Router you could spoof your MAC in the router so that all
computers connected to it would appear to your ISP as the same originally
registered computer.