diff --git a/cloud/shepherd/provider/equinix/updater.go b/cloud/shepherd/provider/equinix/updater.go
new file mode 100644
index 0000000..b053f26
--- /dev/null
+++ b/cloud/shepherd/provider/equinix/updater.go
@@ -0,0 +1,263 @@
+package main
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"flag"
+	"fmt"
+	"time"
+
+	"github.com/packethost/packngo"
+	"k8s.io/klog/v2"
+
+	"source.monogon.dev/cloud/bmaas/bmdb"
+	"source.monogon.dev/cloud/bmaas/bmdb/metrics"
+	"source.monogon.dev/cloud/bmaas/bmdb/model"
+	ecl "source.monogon.dev/cloud/equinix/wrapngo"
+	"source.monogon.dev/cloud/lib/sinbin"
+)
+
+type UpdaterConfig struct {
+	// Enable starts the updater.
+	Enable bool
+	// IterationRate is the minimu mtime taken between subsequent iterations of the
+	// updater.
+	IterationRate time.Duration
+}
+
+func (u *UpdaterConfig) RegisterFlags() {
+	flag.BoolVar(&u.Enable, "updater_enable", true, "Enable the updater, which periodically scans equinix machines and updates their status in the BMDB")
+	flag.DurationVar(&u.IterationRate, "updater_iteration_rate", time.Minute, "Rate limiting for updater iteration loop")
+}
+
+// The Updater periodically scans all machines backed by the equinix provider and
+// updaters their Provided status fields based on data retrieved from the Equinix
+// API.
+type Updater struct {
+	config *UpdaterConfig
+	sinbin sinbin.Sinbin[string]
+
+	cl ecl.Client
+}
+
+func (c *UpdaterConfig) New(cl ecl.Client) (*Updater, error) {
+	return &Updater{
+		config: c,
+		cl:     cl,
+	}, nil
+}
+
+func (u *Updater) Run(ctx context.Context, conn *bmdb.Connection) error {
+	var sess *bmdb.Session
+	var err error
+
+	if !u.config.Enable {
+		return nil
+	}
+
+	for {
+		if sess == nil {
+			sess, err = conn.StartSession(ctx, bmdb.SessionOption{Processor: metrics.ProcessorShepherdUpdater})
+			if err != nil {
+				return fmt.Errorf("could not start BMDB session: %w", err)
+			}
+		}
+		limit := time.After(u.config.IterationRate)
+
+		err = u.runInSession(ctx, sess)
+		switch {
+		case err == nil:
+			<-limit
+		case errors.Is(err, ctx.Err()):
+			return err
+		case errors.Is(err, bmdb.ErrSessionExpired):
+			klog.Errorf("Session expired, restarting...")
+			sess = nil
+			time.Sleep(time.Second)
+		case err != nil:
+			klog.Errorf("Processing failed: %v", err)
+			// TODO(q3k): close session
+			time.Sleep(time.Second)
+		}
+	}
+}
+
+// applyNullStringUpdate returns true if 'up' supersedes 'cur'. Otherwise, it
+// returns false and zeroes out up.
+func applyNullStringUpdate(up, cur *sql.NullString) bool {
+	if up.Valid {
+		if !cur.Valid {
+			return true
+		}
+		if up.String != cur.String {
+			return true
+		}
+	}
+	up.String = ""
+	up.Valid = false
+	return false
+}
+
+// applyNullProviderStatusUpdate returns true if 'up' supersedes 'cur'.
+// Otherwise, it returns false and zeroes out up.
+func applyNullProviderStatusUpdate(up, cur *model.NullProviderStatus) bool {
+	if up.Valid {
+		if !cur.Valid {
+			return true
+		}
+		if up.ProviderStatus != cur.ProviderStatus {
+			return true
+		}
+	}
+	up.ProviderStatus = model.ProviderStatusUnknown
+	up.Valid = false
+	return false
+}
+
+// applyUpdate returns true if 'up' supersedes 'cur'. Otherwise, it returns false
+// and zeroes out up.
+func applyUpdate(up *model.MachineUpdateProviderStatusParams, cur *model.MachineProvided) bool {
+	res := false
+	res = res || applyNullStringUpdate(&up.ProviderReservationID, &cur.ProviderReservationID)
+	res = res || applyNullStringUpdate(&up.ProviderIpAddress, &cur.ProviderIpAddress)
+	res = res || applyNullStringUpdate(&up.ProviderLocation, &cur.ProviderLocation)
+	res = res || applyNullProviderStatusUpdate(&up.ProviderStatus, &cur.ProviderStatus)
+	return res
+}
+
+// updateLog logs information about the given update as calculated by applyUpdate.
+func updateLog(up *model.MachineUpdateProviderStatusParams) {
+	if up.ProviderReservationID.Valid {
+		klog.Infof("   Machine %s: new reservation ID %s", up.ProviderID, up.ProviderReservationID.String)
+	}
+	if up.ProviderIpAddress.Valid {
+		klog.Infof("   Machine %s: new IP address %s", up.ProviderID, up.ProviderIpAddress.String)
+	}
+	if up.ProviderLocation.Valid {
+		klog.Infof("   Machine %s: new location %s", up.ProviderID, up.ProviderLocation.String)
+	}
+	if up.ProviderStatus.Valid {
+		klog.Infof("   Machine %s: new status %s", up.ProviderID, up.ProviderStatus.ProviderStatus)
+	}
+}
+
+func (u *Updater) runInSession(ctx context.Context, sess *bmdb.Session) error {
+	// Get all machines provided by us into the BMDB.
+	// TODO(q3k): do not load all machines into memory.
+
+	var machines []model.MachineProvided
+	err := sess.Transact(ctx, func(q *model.Queries) error {
+		var err error
+		machines, err = q.GetProvidedMachines(ctx, model.ProviderEquinix)
+		return err
+	})
+	if err != nil {
+		return fmt.Errorf("when fetching provided machines: %w", err)
+	}
+
+	// Limit how many machines we check by timing them out if they're likely to not
+	// get updated soon.
+	penalized := 0
+	var check []model.MachineProvided
+	for _, m := range machines {
+		if u.sinbin.Penalized(m.ProviderID) {
+			penalized += 1
+		} else {
+			check = append(check, m)
+		}
+	}
+
+	klog.Infof("Machines to check %d, skipping: %d", len(check), penalized)
+	for _, m := range check {
+		dev, err := u.cl.GetDevice(ctx, "", m.ProviderID, &packngo.ListOptions{
+			Includes: []string{
+				"hardware_reservation",
+			},
+			Excludes: []string{
+				"created_by", "customdata", "network_ports", "operating_system", "actions",
+				"plan", "provisioning_events", "ssh_keys", "tags", "volumes",
+			},
+		})
+		if err != nil {
+			klog.Warningf("Fetching device %s failed: %v", m.ProviderID, err)
+			continue
+		}
+
+		// nextCheck will be used to sinbin the machine for some given time if there is
+		// no difference between the current state and new state.
+		//
+		// Some conditions override this to be shorter (when the machine doesn't yet have
+		// all data available or is in an otherwise unstable state).
+		nextCheck := time.Minute * 30
+
+		up := model.MachineUpdateProviderStatusParams{
+			Provider:   m.Provider,
+			ProviderID: m.ProviderID,
+		}
+
+		if dev.HardwareReservation != nil {
+			up.ProviderReservationID.Valid = true
+			up.ProviderReservationID.String = dev.HardwareReservation.ID
+		} else {
+			nextCheck = time.Minute
+		}
+
+		for _, addr := range dev.Network {
+			if !addr.Public {
+				continue
+			}
+			up.ProviderIpAddress.Valid = true
+			up.ProviderIpAddress.String = addr.Address
+			break
+		}
+		if !up.ProviderIpAddress.Valid {
+			nextCheck = time.Minute
+		}
+
+		if dev.Facility != nil {
+			up.ProviderLocation.Valid = true
+			up.ProviderLocation.String = dev.Facility.Code
+		} else {
+			nextCheck = time.Minute
+		}
+
+		up.ProviderStatus.Valid = true
+		switch dev.State {
+		case "active":
+			up.ProviderStatus.ProviderStatus = model.ProviderStatusRunning
+		case "deleted":
+			up.ProviderStatus.ProviderStatus = model.ProviderStatusMissing
+		case "failed":
+			up.ProviderStatus.ProviderStatus = model.ProviderStatusProvisioningFailedPermanent
+		case "inactive":
+			up.ProviderStatus.ProviderStatus = model.ProviderStatusStopped
+		case "powering_on", "powering_off":
+			nextCheck = time.Minute
+			up.ProviderStatus.ProviderStatus = model.ProviderStatusStopped
+		case "queued", "provisioning", "reinstalling", "post_provisioning":
+			nextCheck = time.Minute
+			up.ProviderStatus.ProviderStatus = model.ProviderStatusProvisioning
+		default:
+			klog.Warningf("Device %s has unexpected status: %q", m.ProviderID, dev.State)
+			nextCheck = time.Minute
+			up.ProviderStatus.ProviderStatus = model.ProviderStatusUnknown
+		}
+
+		if !applyUpdate(&up, &m) {
+			u.sinbin.Add(m.ProviderID, time.Now().Add(nextCheck))
+			continue
+		}
+
+		klog.Infof("Device %s has new data:", m.ProviderID)
+		updateLog(&up)
+		err = sess.Transact(ctx, func(q *model.Queries) error {
+			return q.MachineUpdateProviderStatus(ctx, up)
+		})
+		if err != nil {
+			klog.Warningf("Device %s failed to update: %v", m.ProviderID, err)
+		}
+		u.sinbin.Add(m.ProviderID, time.Now().Add(time.Minute))
+	}
+	return nil
+}