Since Newton the DHCP agent may call dhcp_release6 binary (added in dnsmasq 2.76) so we need this new version in repository Blocked bug is the openstack-neutron spec update to depend on this version
We only ship dnsmasq-utils. dnsmasq (base) comes from RHEL 7.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2018:1623