Admit a port from the machine's own local network, and never a public subnet (issue 154, ADR 0340)

A local service could only be declared public, which says the internet. local-network is a source and a reach: the private network and the private networks the machine reported on a link facing outside, judged here, shown by plan and node, and said in the rule set when there are none.

cmd/mesh-controller/nodes.go

@@ -19,6 +19,7 @@ import (
 	"github.com/novox/mesh-controller/internal/conditions"
 	"github.com/novox/mesh-controller/internal/inventory"
 	"github.com/novox/mesh-controller/internal/link"
+	"github.com/novox/mesh-controller/internal/overlay"
 	"github.com/novox/mesh-controller/internal/token"
 )
 
@@ -884,6 +885,16 @@ func showNode(ctx context.Context, stored *stores, name string) error {
 		for _, line := range machineLines(account, had, time.Now()) {
 			fmt.Println(line)
 		}
+		// And which of the networks it is attached to count as its local network, and why the others
+		// do not (novox/hq ADR 0340 §8).
+		outward, err := inv.OutwardLinksOf(ctx, name)
+		if err != nil {
+			fmt.Printf("  its local network could NOT be judged: %v\n", err)
+		} else {
+			for _, line := range localNetworkLines(account, had, judgedNetworks(account, had, outward, overlay.Interface)) {
+				fmt.Println(line)
+			}
+		}
 	}
 
 	held, err := inv.Profile(ctx, name)