this post was submitted on 12 Oct 2023
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26
PiHole local DNS Config understanding issues (self.selfhosted)
submitted 1 year ago* (last edited 1 year ago) by nexusband to c/selfhosted
6 comments fedilink hide all child comments
 

Hi,

been running PiHole with my FritzBox as DHCP Server for a while now. Just got Fibre and the new router doesn't support "only" setting an upstream DNS (neither does it support setting a domain suffix/local domain). I've switched the DHCP off and now PiHole does DHCP as well.

The FritzBox and the new Router added the domain suffix to recognized hostnames automatically, so even if i set up a fixed IP-Address on some device or machine, i could always use the hostname.local.domain without having to set a reservation.

Can PiHole/AdGuard/Technitium even do this? Do they need some extra configuration? PiHole does recognize the Hostnames correctly for some devices, but most are missing: For example, my Proxmox host was reachable with "pve.domain.local", it isn't with PiHole, even though PiHole identified the hostname. My Homeassistant isn't recognized at all, even though the IP-Address is showing up in PiHole. The Domain under "Advanced DHCP Settings" is set up.

Am i misunderstanding something or did i configure something wrong?

Thanks!

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[–] nexusband 1 points 1 year ago (1 children)

DHCP leases work - they are also correctly registered with the Hostname, it's just those that have a static IPv4 configured (outside the DHCP range of course) It also does work for some, but for Homeassistant and PVE for example it does not...

[–] [email protected] 2 points 1 year ago

Are you saying that it's not working for things that have static leases, but are for dynamic? How are they being assigned? Do you have them set statically from the dhcp server, or from the end device? If it's assigned on the end device, then I don't think pihole ever picks up the hostname since that would have been sent in the dhcp discovery, and if it's static on the end device, it won't ever issue a dhcp discovery message. So it would need to be manually added to your local DNS if it's assigned static on the device