Use the pi or whatever little computer that’s presumably hosting the pi-hole software to also be a DHCP server (and turn off the DHCP server on ISP’s router). It can then advertise itself as the DNS server.
It’s Lemmy’s fault: the original is a static gif file, and picts-rs has converted it into an MP4, on the unsophisticated assumption that it’s animated.
It’s not important. I made three posts, playing with the idea of replacing TIME with TIMM (a character from Andor), 'cos there’s a TV show called TIME, which lasted for three episodes (the same length of time that TIMM did, haha). Anyway, I found a poster for a poor-quality looking film called DEADTIME, and tried to make it about Timm (who, as mentioned, is well dead).