Pi-hole Version vDev (release/v5.0, v4.3.5-500-gdf13b9c) Web Interface Version vDev (release/v5.0, v4.3.2-498-ge620211) FTL Version vDev (release/v5.0, vDev-a4b26c3)
Problem with Beta 5.0:
When looking at my network table - lots of the device that rely on the router for their wifi get identified as such (i.e. broadband.bt.com rather than say home-pc). this occurs with a few other devices as well that pass through the home router in some way (ethernet). I've tried flushing the network table through the gui and manually clearing the network table via the sudo command but the results are still the same.
Its almost like the system sees its coming from the router as the last hop so identifies the traffic via that hostname rather than delving deeper.
Not a big thing - but would be nice to be able to view the network table to reliably see what addresses are assign to what on my network.
You can correct this by mapping the IP's to the host names you want to see in either the /etc/hosts file on the Pi, or using the Local DNS records feature in the web GUI. If you assign the host names you want, then the network page will display them.
I'm pretty sure this is caused by the addition of support for IPv6 addresses on the network table. The network table uses the most recent (= the last used) IP address a client used to make a query to your Pi-hole when determining the host name. This might have been a GUA address such as 2a00:23c5:... for the three devices you pointed out.
I assume you're using conditional forwarding and/or specified your routers as upstream destination and it may be users your ISP's DNS server itself for IPv6 name resolution resulting in broadband.bt.com as reply.
How could we improve on this? We shouldn't prefer IPv4 addresses.
Should we allow multiple host names per device such as we allow multiple IP addresses per device?
Even if it sounds strange, it might be on purpose that someone gives the same hostname to two different devices in the same network. I would not implement any automatism but rather give the user the choice (as you suggested).
I also wouldn't do that. The network overview is meant as a tool to detect devices on the network that doesn't use pihole. If a device uses IPv6 is a valuable information and I see no need to 'hide' it. If users don't want to see IPv6 on the table the can disable IPv6 in their network.
Note this page was not designed to be a network management tool (and is not intended to be such a tool). It is just a quick overview of the clients on your network to show if they are or are not using Pi-hole for DNS. In your case, they are all using Pi-hole for DNS, and Pi-hole should be showing you the client activity for each of these clients by IP.
You can get a simple table of most of this information using the ip neigh command on the Pi.
There wasn't much going on in here, nonetheless, I will give a quick update. Pi-hole v5.1 will bring the new config option NAMES_FROM_NETDB to address picking up borked IPv6 host names also for IPv4 devices. Furthermore, we're working on supporting multiple host names per device. As this is a more involved change, this is scheduled for v5.2, however.
See the PR for the rationale of the new config flag: