Summary
While by-passing a Chelsio NIC in Proxmox, some users are experiencing issues with the csiostor module. After manually blacklisting the module in GRUB settings, no issues were found.
Additional information
We need to remove/comment this entry, which is used for such a module: https://github.com/vyos/vyos-build/blob/circinus/scripts/package-build/linux-kernel/arch/x86/configs/vyos_defconfig#L2235C1-L2235C27
... CONFIG_SCSI_CHELSIO_FCOE=m ...