[SOLVED] DHCP not working with Ubiquiti Edgeswitch 48 lite and Proxmox with LACP


New Member
Aug 3, 2023
Hi guys,

I've a Proxmox server with 4 NICS, I created a Bond0 (OVS Bond) and a vmbr0 (OVS Bridge) to create LACP between that 4 NICS, connected to a Ubiquiti Edgeswitch 48 Lite..

Vlans, and all VM traffic is working fine with one exception.... DHCP traffic.

I've a Windows VM with DHCP running inside proxmox which stops working when I set up the Bonding, but works well without bonding (single nic)

In switch config I've enabled DHCP Snooping on LAG, LAG config was change from MAC address balancing to source/destination TCP... etc ...

This is proxmox network config:
auto lo
iface lo inet loopback

auto eno2
iface eno2 inet manual

auto eno3
iface eno3 inet manual

auto eno4
iface eno4 inet manual

auto eno1
iface eno1 inet manual

auto bond0
iface bond0 inet manual
        ovs_bonds eno1 eno2 eno3 eno4
        ovs_type OVSBond
        ovs_bridge vmbr0
        ovs_options bond_mode=balance-tcp lacp=active

auto vmbr0
iface vmbr0 inet static
        ovs_type OVSBridge
        ovs_ports bond0

Vlans are tagged into LAG switch config... also into proxmox Virtual machines.
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