[CentOS] HW/MAC addr vs client id vs ...

Fri May 22 16:04:11 UTC 2020
R C <cjvijf at gmail.com>


when booting using dhcp, some OS-es use their MAC addr, some, when 
getting an IP with DHCP use a client id, sometimes  it's 01M+MAC, 
sometimes it is a quite long string, similar to UUIDs.

For example some Ubuntu version  sends out their DHCP client id as 
01+MAC, similar to windows machines.

Is there a way in Centos/RHEL, to 'configure' that?  (Cisco equipment is 
kind of particlat about that), so that for example when requesting

an IP using DHCP,  the  client-id used is 01+MAC  instead of just the 
MAC address?

(it becomes a hassle when machines are dual boot for example).