Running DNS from OS10

Physical Configuration

OS10# show version
Dell EMC Networking OS10 Enterprise
Copyright (c) 1999-2020 by Dell Inc. All Rights Reserved.
OS Version: 10.5.1.3
Build Version: 10.5.1.3.190
Build Time: 2020-06-19T21:48:07+0000
System Type: S4112F-ON
Architecture: x86_64
Up Time: 00:30:27

Software Configuration

OS10(config)# configure terminal
OS10(config)# ip name-server 192.168.1.6
OS10(config)# interface vlan 1
OS10(conf-if-vl-1)# ip address 192.168.1.26/24
OS10(conf-if-vl-1)# exit
OS10(config)# ip route 0.0.0.0/0 192.168.1.6 interface vlan1
OS10(config)# end
OS10# system bash
sudo passwd root
su -
sudo apt-get update -y && sudo apt-get install dnsmasq vim dnsutils
vim /etc/hosts

Inside of /etc/hosts add some random entry. I added 192.168.1.26 testrouter.lan

Run :wq! to save and exit vim

Inside of my config /etc/resolv.conf had an erroneous search entry. I had to clear that out to ensure it was valid.

Now run systemctl start dnsmasq

Test on another host

Warning!

I have only tried this with VLAN interfaces which show up as a bridge with an IP under the hood. I’m not sure if you apply an IP address directly to an interface that it would still work. Would have to test it.