I have a Proxmox 8.3.2 system with two working guests in containers - 1 is a Debian 12.7 and the other is a Ubuntu 24.10
They both accept inbound and outbound connections.
Every new guest I add will not allow me to connect to the internet.
I even cloned the Debian guest and that one would not connect.
My internet connection is:
Starlink (192,168.1.1) -> ROG Router in Repeater mode (192,168,1,36) - Proxmox (Wired 192,168,1,43)
My Proxmox host is running on an older Dell server with 13 2TB drives in a RAID 5 configuration, and 7 NICS, but no wireless. Hence the ROG.
The working guests can ping directly to the starlink, and to any internet host
The non working can ping other gests, but cannot ping 192.168.1.1
this is a non working guest:
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.1.140/24
gateway 192.168.1.1
This is a working guest:
cat /etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.1.139/24
gateway 192.168.1.1
Both are set to use host DNS which is:
192.168.1.1
192.168.1.36
8.8.8.8
I added a new bridge and assigned it to another physical nic, and get the same results.
I know I must be doing something wrong, but I have no idea what it is
They both accept inbound and outbound connections.
Every new guest I add will not allow me to connect to the internet.
I even cloned the Debian guest and that one would not connect.
My internet connection is:
Starlink (192,168.1.1) -> ROG Router in Repeater mode (192,168,1,36) - Proxmox (Wired 192,168,1,43)
My Proxmox host is running on an older Dell server with 13 2TB drives in a RAID 5 configuration, and 7 NICS, but no wireless. Hence the ROG.
The working guests can ping directly to the starlink, and to any internet host
The non working can ping other gests, but cannot ping 192.168.1.1
this is a non working guest:
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.1.140/24
gateway 192.168.1.1
This is a working guest:
cat /etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.1.139/24
gateway 192.168.1.1
Both are set to use host DNS which is:
192.168.1.1
192.168.1.36
8.8.8.8
I added a new bridge and assigned it to another physical nic, and get the same results.
I know I must be doing something wrong, but I have no idea what it is