On Fri, May 26, 2017 at 04:54:03PM +0200, Günther J. Niederwimmer wrote: > Hello, > > why it is always a Problem when a kernel, firewall or KVM update is installed ? > > I have a system with a server CentOS 7 (last) and 6 KVM Clients after the > Update Installation and reboot the most in Network is not functional ? > > I lost NIC's and the firewalld change the zone ...... > > I have always to control is the KVM Clients working ? > > Have any a idea what is wrong on my system ? > > Thanks for a answer, No solid answer, I seldom see such an effect. One possibility, many services have a default config file installed with the service. They also may have a "local" config file that takes precedence if present. "local" may be done by location or by a specifice name variation. If you are configuring your services by modifying the default config file, it may be overwritten by an update. jon -- Jon H. LaBadie jon at jgcomp.com 11226 South Shore Rd. (703) 787-0688 (H) Reston, VA 20190 (703) 935-6720 (C)