Connected: An Internet Encyclopedia
3.1 SACK-Permitted Option
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3.1 SACK-Permitted Option
3.1 SACK-Permitted Option
This two-byte option may be sent in a SYN by a TCP that has been
extended to receive (and presumably process) the SACK option once
the connection has opened.
TCP Sack-Permitted Option:
Kind: 4
+---------+---------+
| Kind=4 | Length=2|
+---------+---------+
Next: 3.2 SACK Option
Connected: An Internet Encyclopedia
3.1 SACK-Permitted Option