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Date:      Wed, 10 Jan 2018 11:19:08 +0000
Subject:   [Bug 224730] ipfw dyn_keepalive sends a strange packet
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Andrey V. Elsukov <> changed:

           What    |Removed                     |Added
                 CC|                            |

--- Comment #2 from Andrey V. Elsukov <> ---
This packet is generated by ipfw(4) to cause remote host to send the reply,
that will extend lifetime of the STATE, created by keep-state rule. Since
stateful ipfw doesn't track TCP window, it doesn't set this field in the TCP
header. Also it doesn't set any TCP options.

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