K 10
svn:author
V 6
tuexen
K 8
svn:date
V 27
2018-08-19T14:56:10.354387Z
K 7
svn:log
V 514
Don't expose the uptime via the TCP timestamps.

The TCP client side or the TCP server side when not using SYN-cookies
used the uptime as the TCP timestamp value. This patch uses in all
cases an offset, which is the result of a keyed hash function taking
the source and destination addresses and port numbers into account.
The keyed hash function is the same a used for the initial TSN.

Reviewed by:		rrs@
MFC after:		1 month
Sponsored by:		Netflix, Inc.
Differential Revision:	https://reviews.freebsd.org/D16636

END