lost and found ( for me ? )

Capture data of Android 4.4.2 Nexus 7 ( DNS queries and TCP SYN packets )

just for my memo.
Here are packet dumps of my Nexus 7 tablet connected to Wifi.

[ DNS queries ]

does not add EDNS0 option.

Android 4.4.2 ( Nexus 7 )
Domain Name System (query)
   Transaction ID: 0x4602
   Flags: 0x0100 Standard query
       0... .... .... .... = Response: Message is a query
       .000 0... .... .... = Opcode: Standard query (0)
       .... ..0. .... .... = Truncated: Message is not truncated
       .... ...1 .... .... = Recursion desired: Do query recursively
       .... .... .0.. .... = Z: reserved (0)
       .... .... ...0 .... = Non-authenticated data: Unacceptable
   Questions: 1
   Answer RRs: 0
   Authority RRs: 0
   Additional RRs: 0
   Queries
       www.bing.com: type A, class IN
           Name: www.bing.com
           Type: A (Host address)
           Class: IN (0x0001)

[ TCP SYN packet ]

Android 4.4.2 ( Nexus 7 )
enable window scaling and selective ack.. I didn’t know that.
   Options: (20 bytes), Maximum segment size, SACK permitted, Timestamps, No-Operation (NOP), Window scale
       Maximum segment size: 1460 bytes
           Kind: MSS size (2)
           Length: 4
           MSS Value: 1460
       TCP SACK Permitted Option: True
           Kind: SACK Permission (4)
           Length: 2
       Timestamps: TSval 532510, TSecr 0
           Kind: Timestamp (8)
           Length: 10
           Timestamp value: 532510
           Timestamp echo reply: 0
       No-Operation (NOP)
           Type: 1
               0... .... = Copy on fragmentation: No
               .00. .... = Class: Control (0)
               ...0 0001 = Number: No-Operation (NOP) (1)
       Window scale: 6 (multiply by 64)
           Kind: Window Scale (3)
           Length: 3
           Shift count: 6
           [Multiplier: 64]

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