[Bug 256657] [tcp] RACK unsuitable for jails on stable/13

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 16 Jun 2021 21:19:58 UTC

--- Comment #4 from Michael Tuexen <tuexen@freebsd.org> ---
This is strange. 

When using nc, did you enter CTRL-D on the client side right after starting the
client? This would be like in the failing trace. The client initiates a
connection is terminates it without transferring any data.

I'm not aware of any jail specific stuff, which has to be dealt with in the TCP
code. I don't think we ever tested RACK in jails, I never test TCP stuff in
jails in general. So I'm surprised that there are jail specific issues, but
maybe I'm missing some fundamental stuff here.

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