2nd network port - problem

[oldfart]

Proxmox Virtual Environment 5.4-11
have exisiting network
iface enp6s0 inet manual
auto vmbr0
iface vmbr0 inet static
address 192.168.1.149
netmask 255.255.255.0
gateway 192.168.1.1
bridge_ports enp6s0
bridge_stp off
bridge_fd 0

trying to create a second (on 2nd network port)
the second network port is connected to a tagged VLAN

address 192.168.11.149, gateway 192.168.11.1, bridge port enp7s0
error, Default gateway already exists on interface 'vmbr0'

tried ticking VLAN aware

 

[sidereus]

Why do You want 2 default gateways?

 

[oldfart]

no idea - the second gateway is for the VLAN
anyway, left out the default gateway on the 2nd vmbr, seems to work (so far!)