Hi, running an Ubuntu 20.04 VM (its an appliance, provided by LibreNMS) and am struggling to get it to resolve internal IP addresses on my LAN. 

 

I have a PiHole acting as my local DNS Server - all my clients on my network point to the PiHole, and they can all resolve local addresses set-up in there, 

 

EG, if I ping the name UnRaid from a client, it resolves fine to 192.168.10.8

 

Now, on the Ubuntu box, this doesn't work, I can't ping anything local. I can ping stuff on the internet (ping bcc.co.uk for example) and that's perfect, its just the internal hosts. 

 

If I do an NSLOOKUP for 192.168.10.8 (the IP of the unraid box) I do get a response..

 

nslookup 192.168.10.8

8.10.168.192.in-addr.arpa name = UnRaid.

 

But if I PING UnRaid from the Ubuntu box I get 

 

ping: unraid: Temporary failure in name resolution

 

Any ideas? Im using Netplan to setup and my Netplan.yaml file is:

 

network:

  version: 2

  renderer: networkd

  ethernets:

    enp2s0:

      dhcp4: no

      addresses: [192.168.1.13/25]

      gateway4: 192.168.1.1

      nameservers:

        addresses: [192.168.1.14]

 

im having a similar problem. I dont know if its at all the same though. I as of last night added a ubuntu VM. and now I dont have access to the web UI. I tried localhost:23 and that didnt work. Im about to call comcast for my router password. (I should write that down.) I thought I would come here first to see if anyone else had this problem.

 

I have had acess to the web login up until I installed ubuntu. 

My thing has been taken care of. I had to log into my comcast router and change my server settings from DHCP to Reserved. Then I gave it a static IP. I dont know if it was a ubuntu thing or if it was the modem. This took care of my problem.