Comment 15 for bug 1818060

o/ seeing a similar issue today for periodic centos8 fs39 ... log pointers below. Per comment 14 above https://bugs.launchpad.net/tripleo/+bug/1818060/comments/14 I also see that the node has * net.ipv4.conf.all.arp_ignore = 0 in https://logserver.rdoproject.org/openstack-periodic-master/opendev.org/openstack/tripleo-ci/master/periodic-tripleo-ci-centos-8-ovb-3ctlr_1comp_1supp-featureset039-master/763fc68/logs/undercloud/var/log/extra/sysctl.txt.gz

--- log pointers for related fs39 periodic fails :

        * https://logserver.rdoproject.org/openstack-periodic-master/opendev.org/openstack/tripleo-ci/master/periodic-tripleo-ci-centos-8-ovb-3ctlr_1comp_1supp-featureset039-master/763fc68/job-output.txt
                * 2020-04-20 02:57:22.439102 | primary | [2020/04/20 02:57:22 AM] [ERROR] stdout: ERROR : [/etc/sysconfig/network-scripts/ifup-eth] Error, some other host (FA:16:3E:FC:D1:41) already uses address 10.0.0.1.

        * https://logserver.rdoproject.org/openstack-periodic-master/opendev.org/openstack/tripleo-ci/master/periodic-tripleo-ci-centos-8-ovb-3ctlr_1comp_1supp-featureset039-master/9a46184/job-output.txt
                * 2020-04-19 01:38:21.303050 | primary | os_net_config.ConfigurationError: Failure(s) occurred when applying configuration
                * 2020-04-19 01:38:19.599994 | primary | TASK [Add eth2 interface from eth2.conf] ***************************************