On Sat, May 9, 2020 at 10:02 AM Tom Horsley <horsley1953@xxxxxxxxx> wrote:
>
> Thought I had everything working. I had created a 2nd
> bridge for use with virtual machines I want to keep
> off my local lan (one of the VMs operating as a
> firewall with two ethernets).
>
> Then I rebooted after installing updates, and I couldn't
> talk to anything in the outside world. Aaugh!
>
> Finally discovered I had two default routes, one (the
> one it picked for everything, of course) going through
> the 2nd bridge to nowhere.
>
> Eventually found magic incantation:
>
> nmcli con modify bifrost ipv4.never-default true
>
> (bifrost being my 2nd bridge).
>
> I may eventually get used to network manager, or I
> may die of old age.
I found out so far networkmanager is honoring my
etc/sysconfig/network-scripts/ files in both centos8 and fedora 31:
[root@vmhost2 ~]# ls /etc/sysconfig/network-scripts/
ifcfg-dmzbr ifcfg-eno1.2 ifcfg-enp4s0f0 ifcfg-enp5s0f1 ifcfg-mgmtbr
ifcfg-eno1 ifcfg-eno1.3 ifcfg-enp4s0f1 ifcfg-kubebr
ifcfg-eno1.11 ifcfg-eno1.4 ifcfg-enp5s0f0 ifcfg-lanbr
[root@vmhost2 ~]#
[root@vmhost2 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eno1.11
NAME=eno1.11
DEVICE=eno1.11
ONBOOT=yes
VLAN=yes
BRIDGE=kubebr
[root@vmhost2 ~]# cat /etc/sysconfig/network-scripts/ifcfg-kubebr
NAME=kubebr
DEVICE=kubebr
BOOTPROTO=none
TYPE=Bridge
ONBOOT=yes
[root@vmhost2 ~]#
[root@vmhost2 ~]# cat /etc/sysconfig/network-scripts/ifcfg-lanbr
NAME=lanbr
DEVICE=lanbr
BOOTPROTO=static
TYPE=Bridge
ONBOOT=yes
DEFROUTE=yes
DHCP_HOSTNAME=vhost2.example.com
IPADDR=192.168.1.10
PREFIX=24
GATEWAY=1192.168.1.1
DNS1=192.168.1.3
MTU=9014
[root@vmhost2 ~]#
which makes setting that up in ansible rather easy. With that said, I
would not be surprised if that is dropped before the end of the
year...
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