# `Hyper.Node.FireVMM.Jailer.Checks`
[🔗](https://github.com/harmont-dev/hyper/blob/main/lib/hyper/node/fire_vmm/jailer.ex#L34)

Host pre-requisite checks for running the jailer. Each check returns
`:ok | {:error, reason}`; `run/0` evaluates them in order and stops at the
first failure.

# `network_ready`

```elixir
@spec network_ready() :: :ok | {:error, term()}
```

Host preflight for VM egress networking, which is mandatory: refuses to
start unless `[network]` is configured, the uplink interface exists, and
the kernel is forwarding IPv4 — all prerequisites
`Hyper.SuidHelper.Network.host_init/0` and per-VM `prepare/2` depend on but
cannot themselves provision. This is the gate that makes networking
non-optional: a node missing any of these will not boot.

# `run`

```elixir
@spec run() :: :ok | {:error, term()}
```

Run every pre-requisite check, halting at the first failure.

---

*Consult [api-reference.md](api-reference.md) for complete listing*