This is partial revert of [1]. The issue got triggered as by default dhcp_domain is set to 'novalocal' in nova and dhclient includes that local domain when setting up resolv.conf as part of [2]. To have predictable domain only derived as part of neutron configuration the job unset's dhcp_domain in nova conf. [1] https://review.opendev.org/c/x/whitebox-neutron-tempest-plugin/+/904331 [2] https://bugzilla.redhat.com/show_bug.cgi?id=637763 Change-Id: Id5966cc7447a688ad1a1a8800993096d18f29194