subnets: fix cluster up1 range

salt-pillar/hosts/init.sls

@@ -576,9 +576,9 @@ hosts-inet6:
       hydra: 2a02:8106:208:5282:e03c:d7ff:fe8e:fe16
 
     cluster:
-      cls-gw: 2a02:8106:208:5284::1
+      cls-gw: 2a02:8106:208:5286::1
 {%- for i in range(2, 31) %}
-      server{{ i }}: 2a02:8106:208:5284::1{{ i }}
+      server{{ i }}: 2a02:8106:208:5286::1{{ i }}
 {%- endfor %}
 
     pub:

salt-pillar/subnets/init.sls

@@ -99,6 +99,7 @@ subnets-inet6:
     core: 2a02:8106:208:5281::/64
     serv: 2a02:8106:208:5282::/64
     pub: 2a02:8106:208:5283::/64
+    cluster: 2a02:8106:208:5286::/64
   up2:
     core: 2a02:8106:211:e981::/64
     priv1: 2a02:8106:211:e9c0::/64