[FAILED] Failed to start LSB: IPv4 DHCP client with IPv4LL Support

Hi,
I'm running two Pi-Holes at Ubuntu on two different machines.
And bouth of the machines are spitting out this error during boot:

[FAILED] Failed to start LSB: IPv4 DHCP client with IPv4LL Support.
See 'systemctl status dhcp.service ' for details. 

And when I'm doing that I get this info:

xxx@PrimaryDNS:~$ sudo systemctl status dhcp.service
● dhcp.service
   Loaded: not-found (Reason: No such file or directory)
   Active: inactive (dead)

This don't stop the machine for booting and everything seem to work perfectly fine, but why do I get this error message?
I only use it for DNS and not DHCP.

My best guess is becuase the future DHCP in Pi-Hole are not activated as my Pi-Hole only are for DNS services that's why I'm getting this messages.