On Wed, 17 Nov 2021 22:28:50 +0100 Radek <r...@int.pl> wrote: > On Wed, 17 Nov 2021 17:33:25 -0000 (UTC) > Stuart Henderson <stu.li...@spacehopper.org> wrote: > > > On 2021-11-17, Radek <r...@int.pl> wrote: > > > On Wed, 17 Nov 2021 11:22:42 +0100 > > > Denis Fondras <open...@ledeuns.net> wrote: > > > > > >> Le Wed, Nov 17, 2021 at 05:03:42AM +0100, Radek a écrit : > > >> > > > >> > How can I restore the vendor's MAC address? > > >> > It is 6.8/amd64. > > >> > > > >> > > >> Check dmesg, it will give you the original MAC address, then ifconfig > > >> lladdr... > > >> > > > > > > Hello Denis, > > > dmesg shows my new_MAC. > > > I know the value of my original MAC address but I used to think that > > > removing lladdr value from /etc/hostname.if and then reboot restores the > > > original MAC. I doesn't. > > > > How about a power-cycle (rather than just a reboot)? > I'll do it ASAP. I've tested the same thing on another box, 6.9/amd64: PC Engines apu1 coreboot build 20210709 BIOS version v4.14.0.4 SeaBIOS (version rel-1.14.0.1-0-g8610266a)
Reboot doesn't reset the MAC address, but power-cycle does. > > > > > > Is there any way to "force" OS to restore original MAC address by reading > > > it from hardware/NIC instead of ifconfig lladdr ...? > > > > That's what it normally does. > > > > If it's somehow stuck on the new one and a power-cycle doesn't clear it then > > presumably using lladdr to reset it to the original will stick (look in old > > boot messages in /var/log/messages.*.gz, dhcp server logs, maybe printed > > on the motherboard, etc) > I have a copy of the original MAC and presumably it's not a problem to > restore it with ifconfig lladdr.... but I'm trying to find out why > /etc/netstart (and even reboot) doesn't clear it. > > > > > -- > > Please keep replies on the mailing list. > > > > > -- > Radek > -- Radek
