I looked through that, and was able to make dnsmasq list, however it didn't change anything.
Any devices that try to get an IP address will get an IPv6 address, but not an IPv4 address causing them to not connect.
Also, on a side note, even on build 39296, I need to disable the following :
Use DNSMasq for DHCP
Use DNSMasq for DNS
If I don't the same problem arises. Not sure if that provides any insight.