Debian VM drops connectivity (outward ) after a few hours

superczar

Active Member
Feb 11, 2018
5
1
43
43
I have a Debian VM running wireguard.
The VM seems to lose outbound connectivity after anywhere between a few to several hours.

To expand further, when this happens, I can still ssh to it from elsewhere on the the LAN but if I try pinging any IP from the SSH (or proxmox console) session, it does not work.

The only way to fix it is via systemctl networking restart followed by a VM reboot

The interfaces file:
Code:
source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
allow-hotplug ens18
iface ens18 inet static
address 192.168.5.251
netmask 255.255.255.0
gateway 192.168.5.1
dns-nameserver 8.8.8.8

I have literally no idea where to start troubleshooting this..
The vmbr does not have a hardware or config problem as other VMs on the same bridge continue to work fine
 

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!