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Add a sysctl variable ts_offset_per_conn to change the computation

Description

Add a sysctl variable ts_offset_per_conn to change the computation
of the TCP TS offset from taking the IP addresses and the TCP port
numbers into account to a version just taking only the IP addresses
into account. This works around broken middleboxes or endpoints.
The default is to keep the behaviour, which is also the behaviour
recommended in RFC 7323.

Reported by: devgs@ukr.net
Reviewed by: rrs@
MFC after: 2 weeks
Sponsored by: Netflix, Inc.
Differential Revision: https://reviews.freebsd.org/D20980

Details

Committed
tuexenJul 23 2019, 9:28 PM
Differential Revision
D20980: Add sysctl to use per end point pair TCP timestamp offsets instead of per connection based offsets
Parents
rS350264: MFC r349956:
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