No Internet on VM

KeithHetzner

New Member
Oct 2, 2018
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I've just installed proxmox for the 10th time and I am unable to get the network working inside a VM. No matter what, the VM never has internet access when i create it.

I thought Proxmox worked out of the box, or at least it used to when i used to use the older versions on version 4?

Or perhaps I am doing something wrong?

I tried adding the additional ip's to the network section on Proxmox and rebooted. But the VM once again has no internet at all.

Here is my interfaces file from /etc/network/interfaces:

Code:
Linux Proxmox 4.15.18-5-pve #1 SMP PVE 4.15.18-24 (Thu, 13 Sep 2018 09:15:10 +0200) x86_64

The programs included with the Debian GNU/Linux system are free software;

auto enp2s0
iface enp2s0 inet static
        address  176.***.***.50
        netmask  255.255.255.224
        gateway  176.***.***.33
        up route add -net 176.***.***.32 netmask 255.255.255.224 gw 176.***.***.33 dev enp2s0
# route 176.***.***.32/27 via 176.***.***.33

iface enp2s0 inet6 static
        address  2a01:4f8:160:1412::2
        netmask  64
        gateway  fe80::1

auto vmbr0
iface vmbr0 inet static
        address  176.***.***.38
        netmask  255.255.255.224
        bridge-ports enp2s0
        bridge-stp off
        bridge-fd 0

auto vmbr1
iface vmbr1 inet static
        address  176.***.***.30
        netmask  255.255.255.224
        bridge-ports none
        bridge-stp off
        bridge-fd 0

And this one in the screenshot is of the VM interfaces file:
prnt.sc/l1bjt7 <<Copy paste to your browser

I don't know what other info to give at this point, but if you need me to input any commands into console, tell me.

Might be worth mentioning, I'm considering getting a subscription providing I can get this working.

Many thanks in advance.
 
Last edited:
Hi,

some observations:
* Usually you do not assign an IP to the interface, which you put into the bridge - just assign the ip to vmbr0 (should you really need 2 IPs on the same network - add the second one as an alias interface vmbr0:0)
* the `up route add ....` entry for enp2s0 seems superfluous/wrong - the route you're trying to add should already be there as the link local route for the interface
* the inet6 static interface defintions should likewise be defined for vmbr0
* what do you plan to do with vmbr1? - In general it can be tricky to add IPs from the same subnet to different interfaces on the same host

check our reference documentation : https://pve.proxmox.com/pve-docs/pve-admin-guide.html#sysadmin_network_configuration, and the network configuration entry in the wiki: https://pve.proxmox.com/wiki/Network_Configuration