microcloud/cmd: Detect if IPv6 is supported for mDNS in the setup

Signed-off-by: Gabriel Mougard <[email protected]>

microcloud/cmd/microcloud/main_init.go

@@ -193,6 +193,15 @@ func lookupPeers(s *service.Handler, autoSetup bool, iface *net.Interface, subne
 		expectedSystemsMap[system] = true
 	}
 
+	ipv6Supported, err := mdns.CheckIPv6Status()
+	if err != nil {
+		return fmt.Errorf("Could not check IPv6 status: %v", err)
+	}
+
+	if !ipv6Supported {
+		fmt.Println("IPv6 is not supported on this system, disabling IPv6 mDNS")
+	}
+
 	fmt.Println("Scanning for eligible servers ...")
 	totalPeers := map[string]mdns.ServerInfo{}
 	done := false
@@ -214,7 +223,7 @@ func lookupPeers(s *service.Handler, autoSetup bool, iface *net.Interface, subne
 				break
 			}
 
-			peers, err := mdns.LookupPeers(context.Background(), iface, mdns.Version, s.Name)
+			peers, err := mdns.LookupPeers(context.Background(), iface, mdns.Version, s.Name, ipv6Supported)
 			if err != nil {
 				return err
 			}