Yes, it uses CS6
Internet Protocol, Src: 1.1.1.1 (1.1.1.1), Dst: 224.0.1.39 (224.0.1.39)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0xc0 (DSCP 0x30: Class Selector 6; ECN: 0x00)
Total Length: 48
Source: 1.1.1.1 (1.1.1.1)
Destination: 224.0.1.39 (224.0.1.39)
HTH,
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Edison.