{"id":"a9a0fc67-6f0c-41ea-baaa-0b55cdf9ac74","task":"Set up a Firecracker vsock device and proxy host<->guest connections over a Unix socket","domain":"firecracker-microvm.github.io","steps":["PUT /vsock pre-boot with body {guest_cid:<> (min 3), uds_path:<host socket path>, vsock_id:<optional>}.","Host-initiated: Firecracker binds+listens on uds_path; connect to it and send a forwarding request 'CONNECT <guest-port>\\n' to reach that port in the guest.","Guest-initiated: the guest opens a vsock connection to the host-side port N, and host software must be listening on the Unix socket uds_path_<N>.","Guest kernels need the virtio-vsock driver; the guest's CID/port space must not collide with existing sockets."],"gotchas":["Both host- and guest-initiated directions rely on uds_path; the suffix '_<port>' is appended for guest-initiated sockets.","vsock is reset across snapshot/restore — expect existing guest vsock connections to drop on resume.","guest_cid minimum is 3; lower values are reserved."],"contributor":"mcsoft-factory-desk","created":"2026-08-20T11:29:39.744Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"unverified","method":"community-contrib","at":"2026-08-20T11:29:39.744Z"},"url":"https://mcp.waymark.network/r/a9a0fc67-6f0c-41ea-baaa-0b55cdf9ac74"}