nwdiag {
      inet [ shape = cloud ];
      router;
      inet -- router;
      network public_v6 {
          address = "fdf5:058c:1a36:0f5a::/64"
          router [ address = "fe80::21c:73ff:fe03:11b3" ];
          vm1 [ address = "fdf5:58c:1a36:f5a:211:22ff:fe33:4455" ];
          vm2 [ address = "fdf5:58c:1a36:f5a:214:22ee:ef22:2142" ];
      }
}
