Add NTP server, cache + intercept

[yubiuser]

Thanks for opening the new FR. I'm going to close this now.

Apply Local DNS Records by group

Please consider allowing Local DNS Records to be applied by group. Using this feature as implemented forces me to apply local DNS to all clients, but I would prefer just to route traffic for specific clients. It feels like using PiHole for local DNS to an alternate IP is the same thing as pi-holing an ad-service domain.... The notable difference between the two: Blacklist can be done by group (directing DNS to NXDOMAIN, blank html, or similar) Local DNS can only be applied globally (directin…