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  "title" : "6to4 Entity Keys"
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# 6to4 Entity Keys

Keys that correspond to values in the `kSCEntNet6to4` dictionary.

## Topics

### Constants

[`let kSCPropNet6to4Relay: CFString`](/documentation/SystemConfiguration/kSCPropNet6to4Relay-swift.var)

The 6to4 key `Relay`, whose value is of type `CFString`.


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