The vault claims mesh-vault, and each uplink holder declares the manager it speaks for (hq ADR 0161)

The vault's claim makes a second provider of secret a second claimant, refused by name. The three
uplink definitions declare uplink-networkmanager, uplink-systemd-networkd and uplink-dhcpcd, which the
host reports for the manager it finds active, so the holder for a manager the machine does not run
is refused the way any missing capability is. Merges after the controller holds the seat and the host
reports the capability.

modules/systemd-networkd/module.json

@@ -3,7 +3,8 @@
   "version": "1",
   "capabilities": [
     "package-manager",
-    "service-manager"
+    "service-manager",
+    "uplink-systemd-networkd"
   ],
   "claims": [
     {