Are you referring to kube rather than containers? A container is just namespaces and cgroups. You can still have your mellanox or solarflare zero-copy network

Are you referring to kube rather than containers? A container is just namespaces and cgroups. You can still have your mellanox or solarflare zero-copy network stack for a containerised process. That is, a containerised user space process can directly access the hardware, bypassing the kernel but isolated from other processes. There are plenty of footguns for sure though but my experience working in HFT has been everyone is pretty elite skill-wise so sharp edges are not an issue in practice.