Properties overlap templates?

[_Ian]

If I have a property which is the same across multiple document types in an index, can I define that property more globally?

Example: If I have a field "id_orig.h" which is type IP, can I save on template space by defining it once?
Example config:

{
    "template" : "global*",
    "settings" : {
        "number_of_shards": 5
    },
    "mappings" : {
        "global-alpha" : {
            "_source" : { "enabled" : true },
            "_all" : {"enabled" : false },
            "properties" : {
                "ts" : { "type": "date", "format": "epoch_millis" },
                "uid" : { "type": "text" },
                "id.orig_h" : { "type": "ip" },
                "mac" : { "type": "keyword" }
            }
        },
        "global-bravo" : {
            "_source" : { "enabled" : true },
            "_all" : {"enabled" : false },
            "properties" : {
                "ts" : { "type": "date", "format": "epoch_millis" },
                "uid" : { "type": "text" },
                "id.orig_h" : { "type": "ip" },
                "proto" : { "type": "keyword" }
            }
        }
    }
}