After reading this again I'm thinking you might be confused by IP ID vs
sequence numbers?
IP header and TCP header are different things.
see here for IP header : http://en.wikipedia.org/wiki/IPv4
or this might be of help:
-boun...@lists.pfsense.org]
Im Auftrag von Espen Johansen
Gesendet: Samstag, 14. September 2013 13:42
An: pfSense support and discussion
Betreff: Re: [pfSense] pfSense routing and TCP sequence numbers
After reading this again I'm thinking you might be confused by IP ID vs
sequence numbers?
IP