On 21/08/14 11:25 AM, Robert Moskowitz wrote:
On 08/21/2014 10:56 AM, Reindl Harald wrote:
Am 21.08.2014 um 16:43 schrieb Robert Moskowitz:
On 08/21/2014 10:32 AM, m.roth@5-cent.us wrote:
Keith Keller wrote:
On 2014-08-21, John R Pierce pierce@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?
just look at the file
in the past and on CentOS before RHEL7 it was to assign MAC/device-names at boot, on recent Redhat based systems just remove it and stick with place both in the ifcfg-files while disable biosdevname and systemd devicenames at boot
both, that udev rules and what i explained you may collide or at least you need to change the MAC there too to not confuse the configs
I worked a bit on this. I no longer have the MAC or HW addrs in ifcfg-eth0. Only in /etc/udev/rules.d/70-persistent-net.rules, and only for name=eth0:
# net device () SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="02:67:15:00:01:79", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
but on reboot, I get the error:
Bringing up interface eth0: Device eth0 does not seem to be present, delaying initialization. [FAILED]
and the ethernet comes up as eth1 and the eth1 line is added to /etc/udev/rules.d/70-persistent-net.rules
Almost as if there is something else that needs changing.
Note that you still have to tell the OS "See this real MAC address? Change it to this new MAC address". Shy of reprogramming the NIC directly, you will almost certainly need to continue to reference the real MAC address.