I don't understand how this possible and cannot find anything extraordinary hinting at a reason why.
dnsmasq : disabled : configured dhcp + dns
kea dhcp: enabled : configure dhcp, uses unbound for DNS (so no host resolved), this gives leased and DNS lookups work except for LAN, as expected
switching to dnsmasq, disable kea, disable unbound, enable dnsmasq
no leases are handed out by dnsmasq
so, same firewall configuration, no leases
in 'live view' i do see bogon network detection + a drop, these are multiple drops for dnsmasq while a single drop for kea
dnsmasq = no lease, kea = lease
please, your thoughts and recommendations
Post screenshots of your complete Kea and DNSmasq configuration.