[CentOS] KVM Client NetworkManager Problem

Sun Dec 16 16:05:21 UTC 2018
Gregory P. Ennis <PoMec at PoMec.Net>

hello Greg,

thanks for the answer, now I am not so alone ;-)

this Problem with the third NIC in a KVM Client is from Update to Update 
stronger. I mean on start the Installation "CentOS 7.0" we don't have this 

without NetworkManager is run, on my system, I can't start the third Network-
Card, I have always a LSB Error on the KVM-Clients ??

So now I found a workaround for my Problem :-(. (What are changed in the 
Network Configuration)

I set up the first and second NIC to "hostdev" (hardware) this is running also 
before the update and set “NM_CONTROLLED=no” to this NIC's.

The third is a Bridge controlled Interface now is running with NetworkManager 
as a static Interface with "PEERDNS=no" so I have my resolv.conf is not always 
change and NetworkManager don't create a new Interface with a DHCP config ??

Why Network Manager do that with 7.6, I can't say but I am not happy witzh 
this update :-(. 



You are surely not alone, there are many on this list that have a keen understanding of
things with a lot of experience that provide excellent assistance.  I consider myself to be
a sponge absorbing everything I can, compared to most contributors on this list :)

The migration from 7.5 to 7.6 has been somewhat painful for me too, but the work the Centos
team does in providing this service for us is outstanding.  Most of the time these upgrades
are just a 'blink' and the machines that upgrade have no problems. However, I do have to
admonish myself from time to time with the encouragement of 'it is time to learn', and I
have a lot that I can learn.

Good Luck!!!!!