pub const ENV_HOST_ALIAS: &str = "MSB_HOST_ALIAS";Expand description
Environment variable carrying the DNS name the guest uses to reach
the sandbox host (Docker’s host.docker.internal equivalent).
The host-side network stack emits this value via its
guest_env_vars() method; agentd reads it into
crate::exec-adjacent boot params and writes the mapping into
/etc/hosts. The value the network stack emits is a fixed
protocol constant — today always host.microsandbox.internal.