[Bug 188261] [xen] FreeBSD DomU PVHVM guests cannot 'route' traffic for other Xen PV guests on same Dom0 Host.

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=188261

--- Comment #7 from kpielorz at tdx.co.uk ---
(In reply to raitech from comment #6)

Hi,

I've tested those options here - and they do work *for FreeBSD* boxes.

However - if you set '-txcsum -tso4 -lro' on the FreeBSD box acting as a router
- Windows machines still cannot pass traffic through it as a router :( [not
tested Linux - but I'd guess from past experience a Linux PV instance will be
the same]

So whilst this is a work around (of sorts) for FreeBSD boxes using another
FreeBSD box as a router - it's not usable in mixed platforms.

There's obviously some weird interaction still going on with PV to PV network
traffic involving FreeBSD when it's 'routing' things.

-Karl

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