diff --git a/internal/link/messages_test.go b/internal/link/messages_test.go
index 1c2578e..c7f5371 100644
--- a/internal/link/messages_test.go
+++ b/internal/link/messages_test.go
@@ -142,6 +142,13 @@ func TestTheWireFormatIsExactlyTheseFieldNames(t *testing.T) {
 			[]string{"module", "resource", "kind", "target", "state", "reason", "since", "streak", "restarts",
 				"check", "needs"}},
 		{HealthSaid{Node: "n"}, []string{"node", "health"}},
+		// novox/hq ADR 0241: the machine's own networking, beside its resources.
+		{Health{Contract: ReadinessContract, Resources: []ResourceHealth{}, Network: &NetworkHealth{State: "unhealthy",
+			Parts: []NetworkPart{}}}, []string{"contract", "at", "resources", "network"}},
+		{NetworkHealth{State: "unhealthy", Parts: []NetworkPart{}}, []string{"state", "since", "parts"}},
+		{NetworkPart{Part: "resolv-conf", State: "unhealthy", Reason: "r", Said: "s", Writer: "w", Owner: "o",
+			Toward: []string{"hub"}, Streak: 2}, []string{"part", "state", "reason", "said", "writer", "owner", "toward",
+			"since", "streak"}},
 	} {
 		raw, err := json.Marshal(c.value)
 		if err != nil {