Robert, Sorry Dude. I did not mean to make things worse. All I wanted to say is this: It can be done via the ifconfig command. Now, # systemctl status network.service Tells me that network services still depend on: "ExecStart=/etc/rc.d/init.d/network start" Good! File: "/etc/sysconfig/network-scripts/ifup-eth" Says: "39 # bail out, if the MAC does not fit" Ok, perfect. As you already guessed we need to make this change early on. However, if all else fails, you can always source a custom script here and problem solved. I know, this is not elegant. But as an SA who sometimes needs to do dirty deeds... Again, apologies if I am being too simplistic/stupid here. GKH > > 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. > > >> >> >> >> >> >> >> >> >> >> >> >> >>> 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? > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >