After installing the new Ubuntu 9.10 over the weekend, I set about again trying to establish my new DNS server running on the platform. I have found what seems to be a great tutorial for DDNS (i.e. DNS which is updated with DHCP leases) here.
I’m still working through the bugs, but things at least seem to be getting DHCP addresses, so that’s a good start. 🙂
A couple of gotchas early one – Ubuntu runs a thing called AppArmor which seems to cause a lot of problems with applications like DHCP wanting to update BIND and all that. The comments on this post at DebianAdmin.com outline the changes that are needed to be made, specifically you have to make one last minor change to /etc/apparmor.d/usr.sbin.dhcpd3: