Proxmox VM cannot connect to the internet

[mmc01]

I connect 2 LAN port to my server and config file /etc/network/interfaces like this.

auto lo
iface lo inet loopback

iface eno8303 inet manual

auto eno8403
iface eno8403 inet manual

auto vmbr0
iface vmbr0 inet static
        address 192.168.25.22/24
        gateway 192.168.25.1
        bridge-ports eno8303
        bridge-stp off
        bridge-fd 0

auto vmbr1
iface vmbr1 inet dhcp
        bridge-ports eno8403
        bridge-stp off
        bridge-fd 0

source /etc/network/interfaces.d/*

The interface vmbr0 is ip address of proxmox. I set vmbr1 to ubuntu and config ip address in ubuntu as 192.168.25.15.

when I ping from ubuntu it show like this.

From 192.168.25.15 icmp_seq=40 Destination Host Unreachable
From 192.168.25.15 icmp_seq=41 Destination Host Unreachable
From 192.168.25.15 icmp_seq=42 Destination Host Unreachable

I also cannot SSH to 192.168.25.15. It look like vm cannot get ip address or connect to the internet. How to fix it?

 

[ce3rd]

hi, you don't need vmbr1, just use vmbr0 for ubuntu - it's a bridge, you can use it for your vms and cts, too...