TCP option 1, No Operation

Description:

RFC 793, pg 18:

This option code may be used between options, for example, to align the beginning of a subsequent option on a word boundary. There is no guarantee that senders will use this option, so receivers must be prepared to process options even if they do not begin on a word boundary.


MAC header IP header TCP header TCP option  Data

TCP Option 1:

00 01 02 03 04 05 06 07
Kind

Kind. 8 bits. Set to 1.


RFCs:

[RFC 793] Transmission Control Protocol.