SDN DHCP not working

[TechTronic]

Hello All,

I have a fresh install of 8.4.1 in a datacenter, single ethernet port with a public IP. I'm trying to configure SDN to provide an internal subnet for VMs with DHCP and DNS that allows outside access to the Internet. I followed the guide here: https://pve.proxmox.com/wiki/Setup_Simple_Zone_With_SNAT_and_DHCP and also here: https://cyanlabs.net/tutorials/inst...th-1-ip-using-sdn-and-without-kvm-using-qemu/ (which is pretty much the same guide, reformatted). After setting up the Simple zone, a VNet, a Subnet, and IPAM, VMs are not able to obtain an address via DHCP. I even disabled the firewall at all levels to rule that out, no change.

Any help would be greatly appreciated. Thanks in advance.

 

[hd--]

Did you disable the dnsmasq service systemctl disable --now dnsmasq?
And did you also configure a DHCP range in the subnet?
What is the output of the following command?

systemctl status dnsmasq@<put_in_your_zone_name>.service

 

[TechTronic]

Thanks for the reply. I ended up abandoning the SDN config, and decided to install an OPNsense VM instead.

 

[alpot]

This link https://pve.proxmox.com/wiki/Setup_Simple_Zone_With_SNAT_and_DHCP tells you to install dnsmasq, but then it also says to disable the service. Why?

 

[hd--]

This link https://pve.proxmox.com/wiki/Setup_Simple_Zone_With_SNAT_and_DHCP tells you to install dnsmasq, but then it also says to disable the service. Why?

That is because we enable the dnsmasq systemd template unit per zone and if you do not disable the default systemd service they might disturb each other.