Linux internet issues

[Nathans212]

Hey, It's me again
I'm having a issue with internet on linux (Windows server works fine)
Ubuntu Server - Not Connected
Ubuntu Desktop - Works Fine
Centos 8 - Disconnects from the internet (ping command its every x ping)

https://uploader.nathans212.com/coNE6/rOjuFeWE72.png Centos Ping Test
https://uploader.nathans212.com/coNE6/bANAkOti53.png Ubuntu Not Connected issue
https://uploader.nathans212.com/coNE6/NaPaZoPE49.png Proxmox Ping test

On windows there is a little jump in ping but not as bad

Thank for any help btw

 

[Moayad]

Hi,

Please post the output of your network configuration and the VMs configs that has no network connection.

 

[Nathans212]

Hi,

Please post the output of your network configuration and the VMs configs that has no network connection.

How would I get this?

 

[Nathans212]

https://uploader.nathans212.com/coNE6/xOgOHOVA78.png
https://uploader.nathans212.com/coNE6/TENUjAzi41.png

Vms
https://uploader.nathans212.com/coNE6/TixUQuCe19.png

Is this what you mean?

 

[Nathans212]

Anyone has a idea??

 

[Moayad]

Please post the configs in writing, not photos. For the VM config you can know the config from CLI by doing qm config <VMID>

 

[Nathans212]

Hey, Sorry my website is down that's why the screenshots failed

/etc/network/interfaces

auto vmbr2
iface vmbr2 inet static
        address 88.99.73.63/27
        gateway 88.99.139.199
        bridge-ports none
        bridge-stp off
        bridge-fd 0

This is the broken servers vmid

root@Proxmox ~ # qm config 111
boot: order=scsi0;ide2;net0
cores: 1
ide2: local:iso/ubuntu-18.04.5-live-server-amd64.iso,media=cdrom
memory: 2048
net0: e1000=00:50:56:00:51:22,bridge=vmbr2,firewall=1
numa: 0
ostype: l26
scsi0: local:111/vm-111-disk-0.qcow2,size=32G
scsihw: virtio-scsi-pci
smbios1: uuid=d6de1883-70a6-40fc-819a-0382f058bf07
sockets: 1
vmgenid: 336a1c71-e8cd-43df-b8e3-adb43b18b4a0
root@Proxmox ~ #

I'm going to point it out but this works on windows

 

[Moayad]

Thanks for the configs, please post full output network configuration and for network configuration [Ubuntu Server] as well


EDIT: have you tried to disable firewall on VM 111?

 

[Nathans212]

I'll include this as well

 

[Nathans212]

Ubuntu Server "Not Connected" when clicking save and

source /etc/network/interfaces.d/*

auto lo
iface lo inet loopback

iface lo inet6 loopback

auto enp4s0
iface enp4s0 inet static
        address 88.99.139.199/26
        gateway 88.99.139.193
        pointopoint 88.99.139.193

iface enp4s0 inet6 static
        address 2a01:4f8:10a:2407::2/64
        gateway fe80::1

  up route add -net 88.99.139.192 netmask 255.255.255.192 gw 88.99.139.193 dev enp4s0

auto vmbr0
iface vmbr0 inet static
        address 88.99.139.199/27
        bridge-ports none
        bridge-stp off
        bridge-fd 0
        up ip route add 88.99.139.252/32 dev vmbr0

auto vmbr1
iface vmbr1 inet static
        address 176.9.234.135/29
        bridge-ports none
        bridge-stp off
        bridge-fd 0

auto vmbr2
iface vmbr2 inet static
        address 88.99.73.63/27
        gateway 88.99.139.199
        bridge-ports none
        bridge-stp off
        bridge-fd 0

Here u go

 

[Moayad]

Please try to disable firewall and test it. The VM network config should like this.

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
address 88.99.73.32
netmask 255.255.254.0
gateway 88.99.139.199

What say systemctl status networkingon Ubuntu VM?

 

[Nathans212]

Please try to disable firewall and test it. The VM network config should like this.



What say systemctl status networkingon Ubuntu VM?

I tried disabling the firewall and its the same thing and the only way to edit the vm config is to click "continue without network"

 

[Nathans212]

Clicked continue without network and its this