[CentOS] Trying to override MAC addr

[Robert Moskowitz]

On 08/21/2014 10:56 AM, GKH wrote:
> I just did it like this:
>
> ifconfig enp3s0
>
> enp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>          inet 10.241.27.154  netmask 255.255.255.0  broadcast 10.241.27.255
>          inet6 fe80::210:18ff:fe04:4d0  prefixlen 64  scopeid 0x20<link>
>          ether 00:10:18:04:04:d0  txqueuelen 1000  (Ethernet)
>          RX packets 429591  bytes 41991957 (40.0 MiB)
>          RX errors 0  dropped 0  overruns 0  frame 0
>          TX packets 249536  bytes 19108398 (18.2 MiB)
>          TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
>          device interrupt 18
>
> ifconfig enp3s0 hw ether 00:10:18:04:04:d7
>
> ifconfig enp3s0
> enp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>          inet 10.241.27.154  netmask 255.255.255.0  broadcast 10.241.27.255
>          inet6 fe80::210:18ff:fe04:4d0  prefixlen 64  scopeid 0x20<link>
>          ether 00:10:18:04:04:d7  txqueuelen 1000  (Ethernet)
>          RX packets 429615  bytes 41994383 (40.0 MiB)
>          RX errors 0  dropped 0  overruns 0  frame 0
>          TX packets 249549  bytes 19109350 (18.2 MiB)
>          TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
>          device interrupt 18
> Done!
>
> -GKH

I need the changes to be permanent to apply across boots.  Thus using 
ifcfg-eth0 rather than ifconfig.


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>> On 08/21/2014 10:32 AM, m.roth at 5-cent.us wrote:
>>> Keith Keller wrote:
>>>> On 2014-08-21, John R Pierce <pierce at hogranch.com> wrote:
>>>>> On 8/21/2014 7:09 AM, Robert Moskowitz wrote:
>>>>>> I am trying to override the mac addr.
>>>>> pretty sure you need to use NIC model specific utilities to do this,
>>>>> ifcfg-ethN won't do it.   the hwaddr= in there is for finding the nic,
>>>>> not for reprogramming it.
>>>> ifconfig claims to support it:
>>>>
>>>>          hw class address
>>> <snip>
>>> Also, don't forget /etc/udev/rules.d/70-persistant-net.rules
>> I can't forget what I don't know.  please point me to description of
>> these rules?