modify nic mac-address

mfran2002 · 10-18-2005, 06:35 AM

hi
i'd need to modify "on-line" the mac-address of my network card
i have redhat 7.2 and redhat 9

do you know some useful software?

thanks a lot!!!

imitheos · 10-18-2005, 07:41 AM

Quote:

Originally posted by mfran2002
hi
i'd need to modify "on-line" the mac-address of my network card
i have redhat 7.2 and redhat 9

do you know some useful software?

thanks a lot!!!

have you tried "ifconfig eth0 usual_options hw ether XX:YY:ZZ:AA:BB:CC" ?

mfran2002 · 10-18-2005, 08:03 AM

yes
first of all i have stopped the networks then "ifconfig eth0 hw ether MACADDRESS" and then restart

but my macadress is the same....

do you know why?

imitheos · 10-18-2005, 03:35 PM

Quote:

Originally posted by mfran2002
yes
first of all i have stopped the networks then "ifconfig eth0 hw ether MACADDRESS" and then restart

but my macadress is the same....

do you know why?

When you say you "stopped" and "restarted" the network you mean you ran the system's initscript ?
If yes, then it ran ifconfig without the "hw blah blah"

run "ifconfig eth0 down"
"ifconfig eth0 hw ether MAC"
"ifconfig eth0 up"

and it should work.

Btw, why do you want to change it ? I don't think of any *legal* reason for changing the MAC

mfran2002 · 10-19-2005, 01:52 AM

i tried with your suggestions...
thanks a lot!
it runs!

your questions:

quiet, quiet, it's "legal"
my internet router (i cannot manage it) "see" the actual mac address of my firewall (arp cache)
i have a spare firewall with another mac address
in case of crash of my firewall it's only to avoid lost of precious time to modify (on request) arp cache....

quiet...