It’s pretty obvious from the fact that people are routinely running jails with old userspace (eg 11.0) under newer kernels (eg 13.0). It doesn’t always work fo

It’s pretty obvious from the fact that people are routinely running jails with old userspace (eg 11.0) under newer kernels (eg 13.0). It doesn’t always work for management interfaces (so eg an old route(8) binary might be broken), but is guaranteed to work for normal user programs.