Failed to create the macvlan port: device or ressource busy

[coalfield]

@bruno78 I have exactly the same issue following this guide:

Setup on Synology Docker

Ok a little more messing around tonight I have managed to do a complete setup of Pi-hole using synologies docker UI besides creating the macvlan in SSH above. I mean complete setup by binding volumes for the etc/pihole and etc/dnsmasq.d to maintain settings even after deleting my docker image or restarting the synology. Pi.hole in the browser takes me to my pihole page. Everthing I tried works as expected and functions just like my pi3 install. I dont have it set as my DHCP yet because I plan …

not really sure how to fix as I followed to the T