I've been starting to expand my home lab a bit, and I installed proxmox 7.1-7 on a thinkcenter.
To test things out I created a Windows server 2019 vm, an Ubuntu 21.04 server vm and an Ubuntu 21.04 LXC.
Some details about the network:
- Gateway is at 10.10.15.254/24
- Proxmox is at 10.10.15.1/24
- DHCP leased 10.10.15.5/24 to the Ubuntu VM
- DHCP leased 10.10.15.4/24 to the Ubuntu LXC
- Windows VM is on 10.10.15.2/24
- Proxmox is connected directly to the router to a port bridged to the vlan15 of the trunk port, so there shouldn't be any VLAN tags
Ipv4 forwarding is enabled on proxmox.
The thing is that there are a number of networking issues:
- Proxmox can ping the gateway and 1.1.1.1
- VMs/LXCs can get an IP from DHCP
- VMs/LXCs can ping each other
- VMs/LXCs can ping proxmox
- VMs/LXCs can not ping the gateway
- VMs/LXCs can not ping the 1.1.1.1
- No ICMP packets shown in the mirotik packet sniffer while the vms/lxc ping the gateway / 1.1.1.1
- No ICMP packets shown while running tcpdump on eno1 on proxmox while the vms/lxc ping each other
- No ICMP packets shown while running tcpdump on eno1 on proxmox while the vms/lxc ping 1.1.1.1
- No ICMP packets shown while running tcpdump on eno1 on proxmox while the vms/lxc ping the gateway
- ICMP packets are shown while running tcpdump on vmbr0 on proxmox while the vms/lxc ping each other
- No ICMP packets shown while running tcpdump on vmbr0 on proxmox while the vms/lxc ping 1.1.1.1
From the testing I did, it seems that the bridge works internally because the VMs/LXCs can ping each other, but It's almost like it's semi-disconnected from eno1.
I'm really confused as to what is going since this is a fresh installation on bare metal.
Let me know if I can add any additional info.
To test things out I created a Windows server 2019 vm, an Ubuntu 21.04 server vm and an Ubuntu 21.04 LXC.
Some details about the network:
- Gateway is at 10.10.15.254/24
- Proxmox is at 10.10.15.1/24
- DHCP leased 10.10.15.5/24 to the Ubuntu VM
- DHCP leased 10.10.15.4/24 to the Ubuntu LXC
- Windows VM is on 10.10.15.2/24
- Proxmox is connected directly to the router to a port bridged to the vlan15 of the trunk port, so there shouldn't be any VLAN tags
Ipv4 forwarding is enabled on proxmox.
The thing is that there are a number of networking issues:
- Proxmox can ping the gateway and 1.1.1.1
- VMs/LXCs can get an IP from DHCP
- VMs/LXCs can ping each other
- VMs/LXCs can ping proxmox
- VMs/LXCs can not ping the gateway
- VMs/LXCs can not ping the 1.1.1.1
- No ICMP packets shown in the mirotik packet sniffer while the vms/lxc ping the gateway / 1.1.1.1
- No ICMP packets shown while running tcpdump on eno1 on proxmox while the vms/lxc ping each other
- No ICMP packets shown while running tcpdump on eno1 on proxmox while the vms/lxc ping 1.1.1.1
- No ICMP packets shown while running tcpdump on eno1 on proxmox while the vms/lxc ping the gateway
- ICMP packets are shown while running tcpdump on vmbr0 on proxmox while the vms/lxc ping each other
- No ICMP packets shown while running tcpdump on vmbr0 on proxmox while the vms/lxc ping 1.1.1.1
From the testing I did, it seems that the bridge works internally because the VMs/LXCs can ping each other, but It's almost like it's semi-disconnected from eno1.
I'm really confused as to what is going since this is a fresh installation on bare metal.
Let me know if I can add any additional info.
and that somehow broke only the VMs, figured it out when I plugged a computer on the network that proxmox was on and couldn't ping the router.