I am using DPDK 19.11.
I have a project which I recompiled a few weeks ago and it works fine.
Now I cloned the project, checked out the correct TAG and recompiled the
project again.
When I run the new executable I get the following while rte_eal_init() is
executing:

PMD: otx2_send_ready_msg():408 Incompatible MBox versions(AF: 0x0009 DPDK:
0x0006)
PMD: otx2_eth_dev_init():2222 Failed to initialize otx2_dev rc=-32
PMD: otx2_eth_dev_init():2340 Failed to init nix eth_dev rc=-32
EAL: Releasing pci mapped resource for 0002:03:00.0
EAL: Calling pci_unmap_resource for 0002:03:00.0 at 0x2180000000
EAL: Calling pci_unmap_resource for 0002:03:00.0 at 0x2182000000
EAL: Requested device 0002:03:00.0 cannot be used

When I run the older executable (on the same hw, same ports, ...) it works
just fine.
I must have done something wrong checking out the TAG but I can't figure it
out.
Yes, I understand there is some mailbox version issue, but I am lost.

Can someone please point me in the right direction...

Thanks,
Bert