Proxmox VLAN Trunk Issue

[haywoodspartan]

Problem comes about when I have VLAN Trunking enabled on the switch port but either proxmox kernel tries to allocate all 4K vlans and crashes the NIC.
But setting switchport to access mode never causes the crash as only 1 vlan gets passed through.
This seems like a Ubuntu Kernel Regression

 

[shanreich]

What NIC model do you have? Some only support up to 512 VLANs, so you need to set the bridge-vids to 2-512 (or less, depending on how many the NIC actually supports).