[Bug 135178] [xen] Xen domU outgoing data transfer stall when TSO is enabled

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=135178

Colin Percival <cperciva at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |cperciva at FreeBSD.org

--- Comment #7 from Colin Percival <cperciva at FreeBSD.org> ---
PF is inserting bogus TCP checksums into TSO segments.  Some interfaces say
"gee, some idiot didn't read the spec" and ignore the checksums, while other
interfaces say "hey, this is not a TSO packet" and drop it.

The Xen network (at least as implemented in EC2) falls into the second
category.

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