diff --git a/hub/internal/web/hosts.go b/hub/internal/web/hosts.go
index 48c37e9b..d3e5b0cd 100644
--- a/hub/internal/web/hosts.go
+++ b/hub/internal/web/hosts.go
@@ -955,7 +955,10 @@ func (s *Server) handleHostDelete(w http.ResponseWriter, r *http.Request, hostID
 		http.Error(w, "Internal error", http.StatusInternalServerError)
 		return
 	}
-	s.logger.Printf("[INFO] host deleted: %s (%s)", hostID, hostDeleteEscrowEffect(escrowBefore != nil, escErr))
+	// R-276: DeleteHost removed the host's wg_peers row; ask for the full-list push NOW (as the customer
+	// delete does, R-600), so an uninstalled box's tunnel stops being accepted by the off-site endpoint
+	// at once instead of on the reconciler's next 5-minute tick.
+	s.logger.Printf("[INFO] host deleted: %s (%s; %s)", hostID, hostDeleteEscrowEffect(escrowBefore != nil, escErr), s.requestWGPeerPush())
 	// R-509: the customer record stays and now waits for a box → send the connect link.
 	if host.CustomerID != "" {
 		s.autoMintSelfBindIfWaiting(host.CustomerID, "host delete")
diff --git a/hub/internal/web/r276_host_delete_wg_test.go b/hub/internal/web/r276_host_delete_wg_test.go
new file mode 100644
index 00000000..9da539c6
--- /dev/null
+++ b/hub/internal/web/r276_host_delete_wg_test.go
@@ -0,0 +1,53 @@
+package web
+
+import (
+	"log"
+	"net/http"
+	"net/url"
+	"strings"
+	"testing"
+
+	"gitea.dooplex.hu/admin/felhom-hub/internal/store"
+)
+
+// R-276 (hub half): deleting a host removes its WireGuard peer row AND asks the peer-sync reconciler for
+// an immediate full-list push (the seam is SetWGPeerSync — no SSH, no ep0), so the endpoint stops
+// accepting the uninstalled box's tunnel now. The log says the push was REQUESTED, never "removed".
+// RED-PROOF: drop s.requestWGPeerPush() from handleHostDelete → triggers = 0 → FAIL.
+func TestR276_HostDeleteRemovesPeerAndPushes(t *testing.T) {
+	s, st := newTestServer(t)
+	var logBuf strings.Builder
+	s.logger = log.New(&logBuf, "", 0)
+	triggers := 0
+	s.SetWGPeerSync(func() { triggers++ })
+	if err := st.UpsertHost(&store.Host{HostID: "gone-1", CustomerID: "c9", APIKey: "k"}); err != nil {
+		t.Fatal(err)
+	}
+	if err := st.SetWGEndpoint(&store.WGEndpoint{EndpointID: "ep0", DNSName: "ep0.example", WGPort: 51820,
+		ServerPubkey: "srv", TunnelSubnet: "10.77.0.0/24", PBSTunnelIP: "10.77.0.1"}); err != nil {
+		t.Fatal(err)
+	}
+	if _, _, err := st.AddWGPeer("pk-gone-1", "gone-1", "test"); err != nil {
+		t.Fatal(err)
+	}
+
+	rr := postHostDelete(t, s, "gone-1", url.Values{"confirm_host_id": {"gone-1"}})
+	if rr.Code != http.StatusSeeOther {
+		t.Fatalf("delete = %d (%s)", rr.Code, rr.Body.String())
+	}
+	peers, err := st.ListWGPeers()
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, p := range peers {
+		if p.HostID == "gone-1" || p.Pubkey == "pk-gone-1" {
+			t.Fatal("the deleted host's WireGuard peer is still registered")
+		}
+	}
+	if triggers != 1 {
+		t.Fatalf("WG peer-sync triggers = %d, want 1 (the endpoint must drop the peer now, not on the next tick)", triggers)
+	}
+	if !strings.Contains(logBuf.String(), "WG peer removal push requested") {
+		t.Errorf("the delete line must name the pending push:\n%s", logBuf.String())
+	}
+}