The VMs are not assigned ip address by dhcp server.

I have the exact same problem...I am new to Proxmox but it seems strange - especially since I managed to get it working at first, but not anymore !
 
Has anyone resolved this problem? I am having the same problem. I have a local Debian DHCP server on the same subnet as the proxmox host. The KVM DHCP request reaches my DHCP server which attempts a response, which never gets to the KVM. I have tried turning off all the firewalls and have deleted the NIC on the KVM and re-added it. A new Debian install in KVM still can't get the IP address. See screenshots below documenting my setup and what is happening.

1719226685010.png

1719226731194.png

1719226769016.png
 
Just tried Debian 12.5 and setup firewall to accept UDP destination 255.255.255.255 ports 67,68. Same results.
 
Finally figured it out. I was running proxmox second level under ESXI host 6.0. I installed same version of proxmox on bare metal and it works fine with the exact same settings.