I can't get a SDN VLAN to work with outbound traffic to a VLAN host network. I am running Proxmox 8.2.7. I can create the SDN VLAN zone, the VNET and the subnet, and assign a VM to the subnet. If I set the VNET to VLAN 50 (my Proxmox host's default route), I lose access to the web GUI. If I set the VNET to VLAN 1 (native/untagged on host network) or VLAN 30 (guest VLAN on host network), the VM gets on the SDN but does not have access to DNS or the Internet. I've tried a mix of various VLAN tags and DNS addresses (e.g., Proxmox host DNS, the corresponding DNS for the VLAN tag, and external DNS address). I am picking vmbr0 for the bridge and checking SNAT. I am not using a firewall on the VM. What am I missing? My network config is below.
Code:
auto vmbr0
iface vmbr0 inet manual
bridge-ports enp0s31f6
bridge-stp off
bridge-fd 0
bridge-vlan-aware yes
bridge-vids 2-4094
auto vmbr0.50
iface vmbr0.50 inet static
address 10.7.5.6/24
gateway 10.7.5.1
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