I setup Pi-hole one week ago on my DS218+ in a docker container in host based on the instructions here: How to Install Pi-Hole on Your Synology NAS – Marius Hosting and it all worked fine!
Since then I setup a Virtual Machine and I've not be able to get DHCP working again. I've since removed the virtual machine and tried to set everything back to how it was, but I just can't get it working.
I can setup the docker container fine and I can access the web ui. If I point a device's DNS to the pi-hole/NAS IP it works correctly, I just can't get it to broadcast DHCP. If I run ipconfig /renew a device will time out.
I feel as though it's going to be a simple setting somewhere that I've missed. I've disabled Open vSwitch which was enabled by the VM, and ensured I'm back on eth0 and the firewall is off. Also in the container log I see
Starting pihole-FTL (no-daemon) as root sporadically but a few times per hour, I'm not sure if this is related?
I've read a lot and tried a lot ,but I'm far from knowledgeable on any of this! I see a lot of posts about creating a bridge or macvlan etc. but like I say it all worked perfectly 1 week ago prior to the VM on the same setup
Any help is much appreciated