No external network

[TBITMike]

Hello everyone,

This is my first post. I have used Proxmox for many years and never had an issue until now. I have banged my head for the last few days!

I am running Proxmox 7.3-6 and run a 12 Centos 8 VMs.

I created 12 VM exactly the same and within an hour. All have the same CPU (1), same memory (2GB), same hard drive (100GB, and the same Network bridge (vmbr1).

I created the first 8 VMs and all is great, but after I got to the 9 through the 12th VM, none of the VM from 9th and on can get network connection outside of the host.

A little run down on the VM/host.

They all have been assign pubic static IPs, within a 29 IP block.
The host has 16 CPUs and 128GB of RAM.
VM 9-12 can ping all the other static IPs within the host.
The VM that are having issues are not the last nor the first IPs in the block. Example:
VM (1) x.x.x.12 --working fine
VM (2) x.x.x.13--working fine
VM (3) x.x.x.14--working fine
VM (4) x.x.x.15--working fine
VM (5) x.x.x.16--working fine
VM (9) x.x.x.17--------not working
VM (10) x.x.x.18-------not working
VM (11) x.x.x.19--------not working
VM (12) x.x.x.20--------not working
VM (6) x.x.x.21--working fine
VM (7) x.x.x.22--working fine
VM (8) x.x.x.23--working fine

However VM were created in order VM (1), VM (2)... all working until I got up to the 9th created VM. I have tried swapping IPs from a working VM with and VM that was now working. No change.

If any more info is needed, please let me know.

Thank you!

 

[TBITMike]

Another note: I migrated a non-working Centos 8 VM to another host in the cluster, but that VM could not get external access.

For example again:
Host 1 has VMs 1-12 as I mentioned. I migrated VM (9) x.x.x.17 to host 2 which is within the cluster. Host 2 has VM's that are working fine. After VM (9) x.x.x.17 was migrated to host 2, it still can not ping outside of the cluster. So VM (9) x.x.x.17, on host 2 now can ping VMs 1-8 and 10-12 on host 1

Thanks again!
Mike