anchor.diff:  as many IPs as you want to assign to that node host:
   +
   ----
  -$ oc patch hostsubnet <node_name> -p \ <1>
  +$ oc patch hostsubnet <node_name> --type=merge -p \ <1>
     '{
       "egressIPs": [ <2>
         "<ip_address_1>",
  
positive.code: `192.168.1.101`, and `192.168.1.102`:
  +
  ----
  $ oc patch hostsubnet node1 -p \
    '{"egressIPs": ["192.168.1.100", "192.168.1.101", "192.168.1.102"]}'
  ----
  
  
negative.code: object with the desired IP addresses:
  +
  ----
  $ oc patch netnamespace <project> --type=merge -p \ <1>
    '{
      "egressIPs": [ <2>
        "<ip_address>"
  