How would you go about using a diffrent hw address for an ethernet card. I can do IP aliasing - so I tried:

ifconfig eth0:0 hw ether xx:xx:xx:xx:xx:xx

and got a:

SIOCSIFHWADDR: Device or resource busy

The cable modem provider uses the mac address to verify. I am setting up a Linux router - and I'm not ready to pull out the ehternet card from my other working computer yet. As I want to test every thing out first.

I've looked/sweated over the Adv routing, Ethernet, IP Masquerading Howto's but haven seen this subject. So far its taken me about 2 weeks to get where I'm at: RedHat 7.2, 2 3Com Ethernet III cards, iptables with masquerading.

Try giving eth0:1 instead of 0, because 0 is itself. Try that and let us know.

eth0:1 didn't work - same measage.

When I configured my virtual IP address, this is how i did it:

- create a file named ifcfg-eth0:1 in your /etc/sysconfig/network-scripts directory;
- write this in that file:

DEVICE=eth0:1
ONBOOT=yes
BOOTPROTO=static
# here you should make some adjustments
IPADDR=192.168.1.1
# here too
NETMASK=255.255.255.224
# and here
GATEWAY=192.168.1.1

- restart your network service

When I configured my virtual IP address, this is how i did it:

- create a file named ifcfg-eth0:1 in your /etc/sysconfig/network-scripts directory;
- write this in that file:

DEVICE=eth0:1
ONBOOT=yes
BOOTPROTO=static
# here you should make some adjustments
IPADDR=192.168.1.1
# here too
NETMASK=255.255.255.224
# and here
GATEWAY=192.168.1.1

- restart your network service

I was able to setup an ifcfg-eth0:1 file.
I included the "HWADDR=" tag and put a fake mac address to it.
restarted the Network and ran ifconfig:
But it ignored my fake mac address and used the real one.

I don't think that I can spoof my mac address using this method.

Thanks for your help.

Hi..

I think u cant spoof the MAC address. It is burned the Card Eprom itself.


Siddiqu.T
GNOC

Hi..

I think u cant spoof the MAC address. It is burned the Card Eprom itself.


Siddiqu.T

I think u *can* spoof the MAC address of the primary interface. In fact... I *know* you can. I think u can't spoof the MAC address of any aliases.

Down eth0 and then try...

ip link set eth0 address 00:50E:AD:00:2D