xcat-core/xCAT-server/share/xcat/netboot/esxi/xcat-ipv6.json

{
   "operations" :
   {
      "start" :
      [
         "network ip set -e y",
      ]
   }
   ,
   "metadata" :
   {
      "version"  : 1,
      "requires" : ["random", "system uuid"],
      "provides" : ["vmw-forced-legacy-34"]
   }
}