Proxmox interfaces

vi /etc/interfaces

auto lo
iface lo inet loopback
source /etc/network/interfaces.d/*

# ---- Management interface (host console)
allow-hotplug enp116s0
iface enp116s0 inet manual 

auto vmbr0
iface vmbr0 inet static
    address 198.18.0.192/24
    gateway 198.18.0.1
    bridge-ports enp116s0
    bridge-stp off
    bridge-fd 0
    bridge-vlan-aware no


# ---- VM trunk bridge (VLAN aware)
auto enp117s0
iface enp117s0 inet manual

auto vmbr1
iface vmbr1 inet manual
    bridge-ports enp117s0
    bridge-stp off
    bridge-fd 0
    bridge-vlan-aware yes

# ---- Host IP inside VLAN 30 (optional)
auto vmbr1.30
iface vmbr1.30 inet static
    address 172.30.30.11/24 
    gateway 172.30.30.1 
    vlan-raw-device vmbr1

ifdown -a; ifup -a